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CVE-2026-42006 (GCVE-0-2026-42006)

Vulnerability from nvd – Published: 2026-05-12 13:28 – Updated: 2026-05-12 15:40

Summary

An attacker can cause uncontrolled memory usage with excessive bracing over IMAP. The fix in CVE-2026-27857 was incomplete, only blocking one way of doing this, so there was still another way left open. In particular, the fix was for closing braces, but you could still use open braces to bypass the limit. Using excessive bracing, attacker can cause memory usage up to configured memory limit. Install fixed version, or configure vsz_limit for imap process to low value. No publicly available exploits are known.

Severity ?

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 3.0.5 (semver) Affected: 0 , ≤ 3.1.4 (semver) Affected: 0 , ≤ 2.4.3 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-42006",
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                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2026-05-12T15:40:29.845540Z",
                "version": "2.0.3"
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        "title": "CISA ADP Vulnrichment"
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              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An attacker can cause uncontrolled memory usage with excessive bracing over IMAP. The fix in CVE-2026-27857 was incomplete, only blocking one way of doing this, so there was still another way left open. In particular, the fix was for closing braces, but you could still use open braces to bypass the limit. Using excessive bracing, attacker can cause memory usage up to configured memory limit. Install fixed version, or configure vsz_limit for imap process to low value. No publicly available exploits are known."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
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            "baseSeverity": "MEDIUM",
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        "defect": "DOV-9138",
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CVE-2026-40020 (GCVE-0-2026-40020)

Vulnerability from nvd – Published: 2026-05-12 13:28 – Updated: 2026-05-12 15:40

Summary

Attacker can use the IMAP SETACL command to inject the anyone permission to user's dovecot-acl file even if imap_acl_allow_anyone=no. This causes folders to be spammed to all users. The impact is limited to being able to spam folders to other users, no unexpected access is gained. Install to fixed version. No publicly available exploits are known.

Severity ?

3.1 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-284 - Improper Access Control

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 2.3.0 (semver)

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
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              "content": {
                "id": "CVE-2026-40020",
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                    "Technical Impact": "partial"
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              "status": "affected",
              "version": "0",
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          ]
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      ],
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        {
          "lang": "en",
          "value": "Attacker can use the IMAP SETACL command to inject the anyone permission to user\u0027s dovecot-acl file even if imap_acl_allow_anyone=no. This causes folders to be spammed to all users. The impact is limited to being able to spam folders to other users, no unexpected access is gained. Install to fixed version. No publicly available exploits are known."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
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            "vendor-advisory"
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        }
      ],
      "source": {
        "defect": "DOV-9040",
        "discovery": "EXTERNAL"
      }
    }
  },
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    "assignerOrgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981",
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CVE-2026-40016 (GCVE-0-2026-40016)

Vulnerability from nvd – Published: 2026-05-12 13:28 – Updated: 2026-05-12 15:38

Summary

Attacker can upload a malicious Sieve script over ManageSieve service (or locally) to bypass configured CPU time limits for Sieve up to 130 times of the configured limit. Attacker can use this to degrade server performance and bypass configured CPU time limits for Sieve scripts. Install fixed version, or alternatively prevent direct access to Sieve scripts via ManageSieve or local access. No publicly available exploits are known.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 2.3.0 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
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              "content": {
                "id": "CVE-2026-40016",
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                    "Exploitation": "none"
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                    "Automatable": "no"
                  },
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                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2026-05-12T15:38:37.399932Z",
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              "status": "affected",
              "version": "0",
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          ]
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      ],
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        {
          "lang": "en",
          "value": "Attacker can upload a malicious Sieve script over ManageSieve service (or locally) to bypass configured CPU time limits for Sieve up to 130 times of the configured limit. Attacker can use this to degrade server performance and bypass configured CPU time limits for Sieve scripts. Install fixed version, or alternatively prevent direct access to Sieve scripts via ManageSieve or local access. No publicly available exploits are known."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
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            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
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      ],
      "source": {
        "defect": "DOV-8948",
        "discovery": "EXTERNAL"
      }
    }
  },
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CVE-2026-33603 (GCVE-0-2026-33603)

Vulnerability from nvd – Published: 2026-05-12 13:28 – Updated: 2026-05-12 15:08

Summary

Attacker can use a specially crafted base64 exchange between Dovecot and Client to fake SCRAM TLS channel binding. This requires that the attacker is able to position itself between Dovecot and the client connection. If successful, the attacker can eavesdrop communications between Dovecot and client as MITM proxy. Install fixed version. No publicly available exploits are known.

Severity ?

6.8 (Medium)


                        
                          CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-99 - Improper Control of Resource Identifiers ('Resource Injection')

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 3.1.0 (semver) Affected: 0 , ≤ 2.4.0 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
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              "content": {
                "id": "CVE-2026-33603",
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                  },
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                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-12T15:07:52.503674Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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          }
        ],
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      ],
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        {
          "lang": "en",
          "value": "Attacker can use a specially crafted base64 exchange between Dovecot and Client to fake SCRAM TLS channel binding. This requires that the attacker is able to position itself between Dovecot and the client connection. If successful, the attacker can eavesdrop communications between Dovecot and client as MITM proxy. Install fixed version. No publicly available exploits are known."
        }
      ],
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        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
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CVE-2026-27851 (GCVE-0-2026-27851)

Vulnerability from nvd – Published: 2026-05-12 13:28 – Updated: 2026-05-12 15:06

Summary

When safe filter is used with variable expansion, all following pipelines on the same string are incorrectly interpreted as safe too, enabling unsafe data to be unescaped. This can enable SQL / LDAP injection attacks when used in authentication. Avoid using safe filter until on fixed version. No publicly available exploits are known.

Severity ?

7.4 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-235 - Improper Handling of Extra Parameters

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 3.1.4 (semver) Affected: 0 , ≤ 2.4.3 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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                "id": "CVE-2026-27851",
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                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-12T15:06:27.723154Z",
                "version": "2.0.3"
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            }
          ]
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      ],
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        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
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        "defect": "DOV-8967",
        "discovery": "EXTERNAL"
      }
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CVE-2026-27860 (GCVE-0-2026-27860)

Vulnerability from nvd – Published: 2026-03-27 08:10 – Updated: 2026-03-27 12:33

Summary

If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authentication. This leads to potentially bypassing restrictions and allows probing of LDAP structure. Do not clear out auth_username_chars, or install fixed version. No publicly available exploits are known.

Severity ?

3.7 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

CWE

CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 3.1.0 (semver) Affected: 0 , ≤ 2.4.0 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-27859 (GCVE-0-2026-27859)

Vulnerability from nvd – Published: 2026-03-27 08:10 – Updated: 2026-03-27 12:35

Summary

A mail message containing excessive amount of RFC 2231 MIME parameters causes LMTP to use too much CPU. A suitably formatted mail message causes mail delivery process to consume large amounts of CPU time. Use MTA capabilities to limit RFC 2231 MIME parameters in mail messages, or upgrade to fixed version where the processing is limited. No publicly available exploits are known.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 3.0.2 (semver) Affected: 0 , ≤ 3.1.0 (semver) Affected: 0 , ≤ 2.4.0 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-27858 (GCVE-0-2026-27858)

Vulnerability from nvd – Published: 2026-03-27 08:10 – Updated: 2026-03-27 12:37

Summary

Attacker can send a specifically crafted message before authentication that causes managesieve to allocate large amount of memory. Attacker can force managesieve-login to be unavailable by repeatedly crashing the process. Protect access to managesieve protocol, or install fixed version. No publicly available exploits are known.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 2.3.0 (semver) Affected: 0 , ≤ 3.1.0 (semver) Affected: 0 , ≤ 2.4.0 (semver)

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-27858",
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CVE-2026-27857 (GCVE-0-2026-27857)

Vulnerability from nvd – Published: 2026-03-27 08:10 – Updated: 2026-03-27 12:39

Summary

Sending "NOOP (((...)))" command with 4000 parenthesis open+close results in ~1MB extra memory usage. Longer commands will result in client disconnection. This 1 MB can be left allocated for longer time periods by not sending the command ending LF. So attacker could connect possibly from even a single IP and create 1000 connections to allocate 1 GB of memory, which would likely result in reaching VSZ limit and killing the process and its other proxied connections. Attacker could connect possibly from even a single IP and create 1000 connections to allocate 1 GB of memory, which would likely result in reaching VSZ limit and killing the process and its other proxied connections. Install fixed version, there is no other remediation. No publicly available exploits are known.

Severity ?

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 2.3.0 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-27856 (GCVE-0-2026-27856)

Vulnerability from nvd – Published: 2026-03-27 08:10 – Updated: 2026-03-27 13:45

Summary

Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to determine the configured credentials. Figuring out the credential will lead into full access to the affected component. Limit access to the doveadm http service port, install fixed version. No publicly available exploits are known.

Severity ?

7.4 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-287 - Improper Authentication

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 2.3.0 (semver)

Show details on NVD website

JSON

To clipboard

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                    "Technical Impact": "total"
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          "lang": "en",
          "value": "Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to determine the configured credentials. Figuring out the credential will lead into full access to the affected component. Limit access to the doveadm http service port, install fixed version. No publicly available exploits are known."
        }
      ],
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          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
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            "baseSeverity": "HIGH",
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        "defect": "DOV-8830",
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CVE-2026-27855 (GCVE-0-2026-27855)

Vulnerability from nvd – Published: 2026-03-27 08:10 – Updated: 2026-03-27 19:39

Summary

Dovecot OTP authentication is vulnerable to replay attack under specific conditions. If auth cache is enabled, and username is altered in passdb, then OTP credentials can be cached so that same OTP reply is valid. An attacker able to observe an OTP exchange is able to log in as the user. If authentication happens over unsecure connection, switch to SCRAM protocol. Alternatively ensure the communcations are secured, and if possible switch to OAUTH2 or SCRAM. No publicly available exploits are known.

Severity ?

6.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

CWE

CWE-294 - Authentication Bypass by Capture-replay

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 2.3.0 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-24031 (GCVE-0-2026-24031)

Vulnerability from nvd – Published: 2026-03-27 08:10 – Updated: 2026-03-27 19:40

Summary

Dovecot SQL based authentication can be bypassed when auth_username_chars is cleared by admin. This vulnerability allows bypassing authentication for any user and user enumeration. Do not clear auth_username_chars. If this is not possible, install latest fixed version. No publicly available exploits are known.

Severity ?

7.7 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

CWE

CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 3.1.0 (semver) Affected: 0 , ≤ 2.4.0 (semver)

Show details on NVD website

JSON

To clipboard

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              "content": {
                "id": "CVE-2026-24031",
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          "value": "Dovecot SQL based authentication can be bypassed when auth_username_chars is cleared by admin. This vulnerability allows bypassing authentication for any user and user enumeration. Do not clear auth_username_chars. If this is not possible, install latest fixed version. No publicly available exploits are known."
        }
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CVE-2026-0394 (GCVE-0-2026-0394)

Vulnerability from nvd – Published: 2026-03-27 08:10 – Updated: 2026-03-27 19:41

Summary

When dovecot has been configured to use per-domain passwd files, and they are placed one path component above /etc, or slash has been added to allowed characters, path traversal can happen if the domain component is directory partial. This allows inadvertently reading /etc/passwd (or some other path which ends with passwd). If this file contains passwords, it can be used to authenticate wrongly, or if this is userdb, it can unexpectly make system users appear valid users. Upgrade to fixed version, or use different authentication scheme that does not rely on paths. Alternatively you can also ensure that the per-domain passwd files are in some other location, such as /etc/dovecot/auth/%d. No publicly available exploits are known.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 2.3.0 (semver)

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
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              "content": {
                "id": "CVE-2026-0394",
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CVE-2025-59032 (GCVE-0-2025-59032)

Vulnerability from nvd – Published: 2026-03-27 08:10 – Updated: 2026-03-27 19:42

Summary

ManageSieve AUTHENTICATE command crashes when using literal as SASL initial response. This can be used to crash ManageSieve service repeatedly, making it unavailable for other users. Control access to ManageSieve port, or disable the service if it's not needed. Alternatively upgrade to a fixed version. No publicly available exploits are known.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-20 - Improper Input Validation

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 3.1.0 (semver) Affected: 0 , ≤ 2.4.0 (semver)

Show details on NVD website

JSON

To clipboard

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                    "Technical Impact": "partial"
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          ]
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      ],
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      ],
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CVE-2025-59031 (GCVE-0-2025-59031)

Vulnerability from nvd – Published: 2026-03-27 08:10 – Updated: 2026-03-27 19:42

Summary

Dovecot has provided a script to use for attachment to text conversion. This script unsafely handles zip-style attachments. Attacker can use specially crafted OOXML documents to cause unintended files on the system to be indexed and subsequently ending up in FTS indexes. Do not use the provided script, instead, use something else like FTS tika. No publicly available exploits are known.

Severity ?

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CWE

CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 2.3.0 (semver)

Show details on NVD website

JSON

To clipboard

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      {
        "metrics": [
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                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-27T19:42:31.241566Z",
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              },
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          }
        ],
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          "dateUpdated": "2026-03-27T19:42:40.634Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
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      "affected": [
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          "defaultStatus": "unaffected",
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              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Dovecot has provided a script to use for attachment to text conversion. This script unsafely handles zip-style attachments. Attacker can use specially crafted OOXML documents to cause unintended files on the system to be indexed and subsequently ending up in FTS indexes. Do not use the provided script, instead, use something else like FTS tika. No publicly available exploits are known."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
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          "descriptions": [
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              "cweId": "CWE-200",
              "description": "Exposure of Sensitive Information to an Unauthorized Actor",
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            }
          ]
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      ],
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        "dateUpdated": "2026-03-27T12:33:21.043Z",
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          "tags": [
            "vendor-advisory"
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          "url": "https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json"
        }
      ],
      "source": {
        "defect": "DOV-8584",
        "discovery": "EXTERNAL"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981",
    "assignerShortName": "OX",
    "cveId": "CVE-2025-59031",
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    "dateReserved": "2025-09-08T14:22:28.105Z",
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  },
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CVE-2025-59028 (GCVE-0-2025-59028)

Vulnerability from nvd – Published: 2026-03-27 08:10 – Updated: 2026-03-27 19:43

Summary

When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes (heavy perfomance penalty on large deployments). No publicly available exploits are known.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-20 - Improper Input Validation

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 3.1.0 (semver) Affected: 0 , ≤ 2.4.0 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
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              "content": {
                "id": "CVE-2025-59028",
                "options": [
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                    "Automatable": "yes"
                  },
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                    "Technical Impact": "partial"
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      ],
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          "lang": "en",
          "value": "When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes (heavy perfomance penalty on large deployments). No publicly available exploits are known."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
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          "url": "https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json"
        }
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      "source": {
        "defect": "DOV-8349",
        "discovery": "INTERNAL"
      }
    }
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  "cveMetadata": {
    "assignerOrgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981",
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CVE-2026-42006 (GCVE-0-2026-42006)

Vulnerability from cvelistv5 – Published: 2026-05-12 13:28 – Updated: 2026-05-12 15:40

Summary

An attacker can cause uncontrolled memory usage with excessive bracing over IMAP. The fix in CVE-2026-27857 was incomplete, only blocking one way of doing this, so there was still another way left open. In particular, the fix was for closing braces, but you could still use open braces to bypass the limit. Using excessive bracing, attacker can cause memory usage up to configured memory limit. Install fixed version, or configure vsz_limit for imap process to low value. No publicly available exploits are known.

Severity ?

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 3.0.5 (semver) Affected: 0 , ≤ 3.1.4 (semver) Affected: 0 , ≤ 2.4.3 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-42006",
                "options": [
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                    "Exploitation": "none"
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                    "Automatable": "no"
                  },
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                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-12T15:40:29.845540Z",
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              },
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              "lessThanOrEqual": "2.4.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An attacker can cause uncontrolled memory usage with excessive bracing over IMAP. The fix in CVE-2026-27857 was incomplete, only blocking one way of doing this, so there was still another way left open. In particular, the fix was for closing braces, but you could still use open braces to bypass the limit. Using excessive bracing, attacker can cause memory usage up to configured memory limit. Install fixed version, or configure vsz_limit for imap process to low value. No publicly available exploits are known."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
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          },
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              "cweId": "CWE-400",
              "description": "Uncontrolled Resource Consumption",
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        "dateUpdated": "2026-05-12T13:39:06.099Z",
        "orgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981",
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          "tags": [
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          "url": "https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0002.json"
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        "defect": "DOV-9138",
        "discovery": "EXTERNAL"
      }
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CVE-2026-40020 (GCVE-0-2026-40020)

Vulnerability from cvelistv5 – Published: 2026-05-12 13:28 – Updated: 2026-05-12 15:40

Summary

Attacker can use the IMAP SETACL command to inject the anyone permission to user's dovecot-acl file even if imap_acl_allow_anyone=no. This causes folders to be spammed to all users. The impact is limited to being able to spam folders to other users, no unexpected access is gained. Install to fixed version. No publicly available exploits are known.

Severity ?

3.1 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-284 - Improper Access Control

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 2.3.0 (semver)

Show details on NVD website

JSON

To clipboard

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    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-40020",
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                    "Exploitation": "none"
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                    "Automatable": "no"
                  },
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                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
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                "version": "2.0.3"
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              "status": "affected",
              "version": "0",
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            }
          ]
        }
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        {
          "lang": "en",
          "value": "Attacker can use the IMAP SETACL command to inject the anyone permission to user\u0027s dovecot-acl file even if imap_acl_allow_anyone=no. This causes folders to be spammed to all users. The impact is limited to being able to spam folders to other users, no unexpected access is gained. Install to fixed version. No publicly available exploits are known."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
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      "source": {
        "defect": "DOV-9040",
        "discovery": "EXTERNAL"
      }
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    "assignerOrgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981",
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CVE-2026-40016 (GCVE-0-2026-40016)

Vulnerability from cvelistv5 – Published: 2026-05-12 13:28 – Updated: 2026-05-12 15:38

Summary

Attacker can upload a malicious Sieve script over ManageSieve service (or locally) to bypass configured CPU time limits for Sieve up to 130 times of the configured limit. Attacker can use this to degrade server performance and bypass configured CPU time limits for Sieve scripts. Install fixed version, or alternatively prevent direct access to Sieve scripts via ManageSieve or local access. No publicly available exploits are known.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 2.3.0 (semver)

Show details on NVD website

JSON

To clipboard

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
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                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
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              "version": "0",
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          "lang": "en",
          "value": "Attacker can upload a malicious Sieve script over ManageSieve service (or locally) to bypass configured CPU time limits for Sieve up to 130 times of the configured limit. Attacker can use this to degrade server performance and bypass configured CPU time limits for Sieve scripts. Install fixed version, or alternatively prevent direct access to Sieve scripts via ManageSieve or local access. No publicly available exploits are known."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.3,
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      ],
      "source": {
        "defect": "DOV-8948",
        "discovery": "EXTERNAL"
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CVE-2026-33603 (GCVE-0-2026-33603)

Vulnerability from cvelistv5 – Published: 2026-05-12 13:28 – Updated: 2026-05-12 15:08

Summary

Attacker can use a specially crafted base64 exchange between Dovecot and Client to fake SCRAM TLS channel binding. This requires that the attacker is able to position itself between Dovecot and the client connection. If successful, the attacker can eavesdrop communications between Dovecot and client as MITM proxy. Install fixed version. No publicly available exploits are known.

Severity ?

6.8 (Medium)


                        
                          CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-99 - Improper Control of Resource Identifiers ('Resource Injection')

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 3.1.0 (semver) Affected: 0 , ≤ 2.4.0 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-27851 (GCVE-0-2026-27851)

Vulnerability from cvelistv5 – Published: 2026-05-12 13:28 – Updated: 2026-05-12 15:06

Summary

When safe filter is used with variable expansion, all following pipelines on the same string are incorrectly interpreted as safe too, enabling unsafe data to be unescaped. This can enable SQL / LDAP injection attacks when used in authentication. Avoid using safe filter until on fixed version. No publicly available exploits are known.

Severity ?

7.4 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-235 - Improper Handling of Extra Parameters

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 3.1.4 (semver) Affected: 0 , ≤ 2.4.3 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-27860 (GCVE-0-2026-27860)

Vulnerability from cvelistv5 – Published: 2026-03-27 08:10 – Updated: 2026-03-27 12:33

Summary

If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authentication. This leads to potentially bypassing restrictions and allows probing of LDAP structure. Do not clear out auth_username_chars, or install fixed version. No publicly available exploits are known.

Severity ?

3.7 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

CWE

CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 3.1.0 (semver) Affected: 0 , ≤ 2.4.0 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-27859 (GCVE-0-2026-27859)

Vulnerability from cvelistv5 – Published: 2026-03-27 08:10 – Updated: 2026-03-27 12:35

Summary

A mail message containing excessive amount of RFC 2231 MIME parameters causes LMTP to use too much CPU. A suitably formatted mail message causes mail delivery process to consume large amounts of CPU time. Use MTA capabilities to limit RFC 2231 MIME parameters in mail messages, or upgrade to fixed version where the processing is limited. No publicly available exploits are known.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 3.0.2 (semver) Affected: 0 , ≤ 3.1.0 (semver) Affected: 0 , ≤ 2.4.0 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2026-27858 (GCVE-0-2026-27858)

Vulnerability from cvelistv5 – Published: 2026-03-27 08:10 – Updated: 2026-03-27 12:37

Summary

Attacker can send a specifically crafted message before authentication that causes managesieve to allocate large amount of memory. Attacker can force managesieve-login to be unavailable by repeatedly crashing the process. Protect access to managesieve protocol, or install fixed version. No publicly available exploits are known.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 2.3.0 (semver) Affected: 0 , ≤ 3.1.0 (semver) Affected: 0 , ≤ 2.4.0 (semver)

Show details on NVD website

JSON

To clipboard

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      "references": [
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          "url": "https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json"
        }
      ],
      "source": {
        "defect": "DOV-8818",
        "discovery": "EXTERNAL"
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  "dataType": "CVE_RECORD",
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CVE-2026-27857 (GCVE-0-2026-27857)

Vulnerability from cvelistv5 – Published: 2026-03-27 08:10 – Updated: 2026-03-27 12:39

Summary

Sending "NOOP (((...)))" command with 4000 parenthesis open+close results in ~1MB extra memory usage. Longer commands will result in client disconnection. This 1 MB can be left allocated for longer time periods by not sending the command ending LF. So attacker could connect possibly from even a single IP and create 1000 connections to allocate 1 GB of memory, which would likely result in reaching VSZ limit and killing the process and its other proxied connections. Attacker could connect possibly from even a single IP and create 1000 connections to allocate 1 GB of memory, which would likely result in reaching VSZ limit and killing the process and its other proxied connections. Install fixed version, there is no other remediation. No publicly available exploits are known.

Severity ?

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 2.3.0 (semver)

Show details on NVD website

JSON

To clipboard

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  "containers": {
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CVE-2026-27856 (GCVE-0-2026-27856)

Vulnerability from cvelistv5 – Published: 2026-03-27 08:10 – Updated: 2026-03-27 13:45

Summary

Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack. An attacker can use this to determine the configured credentials. Figuring out the credential will lead into full access to the affected component. Limit access to the doveadm http service port, install fixed version. No publicly available exploits are known.

Severity ?

7.4 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CWE

CWE-287 - Improper Authentication

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 2.3.0 (semver)

Show details on NVD website

JSON

To clipboard

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        "discovery": "EXTERNAL"
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CVE-2026-27855 (GCVE-0-2026-27855)

Vulnerability from cvelistv5 – Published: 2026-03-27 08:10 – Updated: 2026-03-27 19:39

Summary

Dovecot OTP authentication is vulnerable to replay attack under specific conditions. If auth cache is enabled, and username is altered in passdb, then OTP credentials can be cached so that same OTP reply is valid. An attacker able to observe an OTP exchange is able to log in as the user. If authentication happens over unsecure connection, switch to SCRAM protocol. Alternatively ensure the communcations are secured, and if possible switch to OAUTH2 or SCRAM. No publicly available exploits are known.

Severity ?

6.8 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

CWE

CWE-294 - Authentication Bypass by Capture-replay

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 2.3.0 (semver)

Show details on NVD website

JSON

To clipboard

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      {
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                "id": "CVE-2026-27855",
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        }
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CVE-2026-24031 (GCVE-0-2026-24031)

Vulnerability from cvelistv5 – Published: 2026-03-27 08:10 – Updated: 2026-03-27 19:40

Summary

Dovecot SQL based authentication can be bypassed when auth_username_chars is cleared by admin. This vulnerability allows bypassing authentication for any user and user enumeration. Do not clear auth_username_chars. If this is not possible, install latest fixed version. No publicly available exploits are known.

Severity ?

7.7 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L

CWE

CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 3.1.0 (semver) Affected: 0 , ≤ 2.4.0 (semver)

Show details on NVD website

JSON

To clipboard

{
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                "id": "CVE-2026-24031",
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CVE-2026-0394 (GCVE-0-2026-0394)

Vulnerability from cvelistv5 – Published: 2026-03-27 08:10 – Updated: 2026-03-27 19:41

Summary

When dovecot has been configured to use per-domain passwd files, and they are placed one path component above /etc, or slash has been added to allowed characters, path traversal can happen if the domain component is directory partial. This allows inadvertently reading /etc/passwd (or some other path which ends with passwd). If this file contains passwords, it can be used to authenticate wrongly, or if this is userdb, it can unexpectly make system users appear valid users. Upgrade to fixed version, or use different authentication scheme that does not rely on paths. Alternatively you can also ensure that the per-domain passwd files are in some other location, such as /etc/dovecot/auth/%d. No publicly available exploits are known.

Severity ?

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

OX

References

1 reference

URL	Tags
https://documentation.open-xchange.com/dovecot/se…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Open-Xchange GmbH	OX Dovecot Pro	Affected: 0 , ≤ 2.3.0 (semver)

Show details on NVD website

JSON

To clipboard

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      {
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        {
          "lang": "en",
          "value": "When dovecot has been configured to use per-domain passwd files, and they are placed one path component above /etc, or slash has been added to allowed characters, path traversal can happen if the domain component is directory partial. This allows inadvertently reading /etc/passwd (or some other path which ends with passwd). If this file contains passwords, it can be used to authenticate wrongly, or if this is userdb, it can unexpectly make system users appear valid users.  Upgrade to fixed version, or use different authentication scheme that does not rely on paths. Alternatively you can also ensure that the per-domain passwd files are in some other location, such as /etc/dovecot/auth/%d. No publicly available exploits are known."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-22",
              "description": "Improper Limitation of a Pathname to a Restricted Directory (\u0027Path Traversal\u0027)",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-27T12:33:23.863Z",
        "orgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981",
        "shortName": "OX"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json"
        }
      ],
      "source": {
        "defect": "DOV-8591",
        "discovery": "EXTERNAL"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981",
    "assignerShortName": "OX",
    "cveId": "CVE-2026-0394",
    "datePublished": "2026-03-27T08:10:17.375Z",
    "dateReserved": "2025-11-28T09:18:02.607Z",
    "dateUpdated": "2026-03-27T19:41:17.447Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

VAR-201105-0095

Vulnerability from variot - Updated: 2026-04-10 23:21

lib-mail/message-header-parser.c in Dovecot 1.2.x before 1.2.17 and 2.0.x before 2.0.13 does not properly handle '\0' characters in header names, which allows remote attackers to cause a denial of service (daemon crash or mailbox corruption) via a crafted e-mail message. Dovecot is an open source IMAP and POP3 server for Linux/UNIX-like systems. Dovecot is prone to a denial-of-service vulnerability because it fails to properly parse message headers. A remote attacker can exploit this issue to crash the affected application, denying service to legitimate users. Dovecot versions prior to 1.2.17 and 2.0.13 are vulnerable. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1

===================================================================== Red Hat Security Advisory

Synopsis: Moderate: dovecot security update Advisory ID: RHSA-2011:1187-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-1187.html Issue date: 2011-08-18 CVE Names: CVE-2011-1929 =====================================================================

Summary:

Updated dovecot packages that fix one security issue are now available for Red Hat Enterprise Linux 4, 5, and 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Relevant releases/architectures:

RHEL Desktop Workstation (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64 Red Hat Enterprise Linux Desktop version 4 - i386, x86_64 Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

(CVE-2011-1929)

Users of dovecot are advised to upgrade to these updated packages, which contain a backported patch to resolve this issue. After installing the updated packages, the dovecot service will be restarted automatically.

Solution:

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259

Bugs fixed (http://bugzilla.redhat.com/):

706286 - CVE-2011-1929 dovecot: potential crash when parsing header names that contain NUL characters

Package List:

Red Hat Enterprise Linux AS version 4:

Source: ftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/dovecot-0.99.11-10.EL4.src.rpm

i386: dovecot-0.99.11-10.EL4.i386.rpm dovecot-debuginfo-0.99.11-10.EL4.i386.rpm

ia64: dovecot-0.99.11-10.EL4.ia64.rpm dovecot-debuginfo-0.99.11-10.EL4.ia64.rpm

ppc: dovecot-0.99.11-10.EL4.ppc.rpm dovecot-debuginfo-0.99.11-10.EL4.ppc.rpm

s390: dovecot-0.99.11-10.EL4.s390.rpm dovecot-debuginfo-0.99.11-10.EL4.s390.rpm

s390x: dovecot-0.99.11-10.EL4.s390x.rpm dovecot-debuginfo-0.99.11-10.EL4.s390x.rpm

x86_64: dovecot-0.99.11-10.EL4.x86_64.rpm dovecot-debuginfo-0.99.11-10.EL4.x86_64.rpm

Red Hat Enterprise Linux Desktop version 4:

Source: ftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/dovecot-0.99.11-10.EL4.src.rpm

i386: dovecot-0.99.11-10.EL4.i386.rpm dovecot-debuginfo-0.99.11-10.EL4.i386.rpm

x86_64: dovecot-0.99.11-10.EL4.x86_64.rpm dovecot-debuginfo-0.99.11-10.EL4.x86_64.rpm

Red Hat Enterprise Linux ES version 4:

Source: ftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/dovecot-0.99.11-10.EL4.src.rpm

i386: dovecot-0.99.11-10.EL4.i386.rpm dovecot-debuginfo-0.99.11-10.EL4.i386.rpm

ia64: dovecot-0.99.11-10.EL4.ia64.rpm dovecot-debuginfo-0.99.11-10.EL4.ia64.rpm

x86_64: dovecot-0.99.11-10.EL4.x86_64.rpm dovecot-debuginfo-0.99.11-10.EL4.x86_64.rpm

Red Hat Enterprise Linux WS version 4:

Source: ftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/dovecot-0.99.11-10.EL4.src.rpm

i386: dovecot-0.99.11-10.EL4.i386.rpm dovecot-debuginfo-0.99.11-10.EL4.i386.rpm

ia64: dovecot-0.99.11-10.EL4.ia64.rpm dovecot-debuginfo-0.99.11-10.EL4.ia64.rpm

x86_64: dovecot-0.99.11-10.EL4.x86_64.rpm dovecot-debuginfo-0.99.11-10.EL4.x86_64.rpm

RHEL Desktop Workstation (v. 5 client):

Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/dovecot-1.0.7-7.el5_7.1.src.rpm

i386: dovecot-1.0.7-7.el5_7.1.i386.rpm dovecot-debuginfo-1.0.7-7.el5_7.1.i386.rpm

x86_64: dovecot-1.0.7-7.el5_7.1.x86_64.rpm dovecot-debuginfo-1.0.7-7.el5_7.1.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/dovecot-1.0.7-7.el5_7.1.src.rpm

i386: dovecot-1.0.7-7.el5_7.1.i386.rpm dovecot-debuginfo-1.0.7-7.el5_7.1.i386.rpm

ia64: dovecot-1.0.7-7.el5_7.1.ia64.rpm dovecot-debuginfo-1.0.7-7.el5_7.1.ia64.rpm

ppc: dovecot-1.0.7-7.el5_7.1.ppc.rpm dovecot-debuginfo-1.0.7-7.el5_7.1.ppc.rpm

s390x: dovecot-1.0.7-7.el5_7.1.s390x.rpm dovecot-debuginfo-1.0.7-7.el5_7.1.s390x.rpm

x86_64: dovecot-1.0.7-7.el5_7.1.x86_64.rpm dovecot-debuginfo-1.0.7-7.el5_7.1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/dovecot-2.0.9-2.el6_1.1.src.rpm

i386: dovecot-2.0.9-2.el6_1.1.i686.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm dovecot-mysql-2.0.9-2.el6_1.1.i686.rpm dovecot-pgsql-2.0.9-2.el6_1.1.i686.rpm dovecot-pigeonhole-2.0.9-2.el6_1.1.i686.rpm

ppc64: dovecot-2.0.9-2.el6_1.1.ppc.rpm dovecot-2.0.9-2.el6_1.1.ppc64.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.ppc.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.ppc64.rpm dovecot-mysql-2.0.9-2.el6_1.1.ppc64.rpm dovecot-pgsql-2.0.9-2.el6_1.1.ppc64.rpm dovecot-pigeonhole-2.0.9-2.el6_1.1.ppc64.rpm

s390x: dovecot-2.0.9-2.el6_1.1.s390.rpm dovecot-2.0.9-2.el6_1.1.s390x.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.s390.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.s390x.rpm dovecot-mysql-2.0.9-2.el6_1.1.s390x.rpm dovecot-pgsql-2.0.9-2.el6_1.1.s390x.rpm dovecot-pigeonhole-2.0.9-2.el6_1.1.s390x.rpm

x86_64: dovecot-2.0.9-2.el6_1.1.i686.rpm dovecot-2.0.9-2.el6_1.1.x86_64.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.x86_64.rpm dovecot-mysql-2.0.9-2.el6_1.1.x86_64.rpm dovecot-pgsql-2.0.9-2.el6_1.1.x86_64.rpm dovecot-pigeonhole-2.0.9-2.el6_1.1.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/dovecot-2.0.9-2.el6_1.1.src.rpm

i386: dovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm dovecot-devel-2.0.9-2.el6_1.1.i686.rpm

ppc64: dovecot-debuginfo-2.0.9-2.el6_1.1.ppc64.rpm dovecot-devel-2.0.9-2.el6_1.1.ppc64.rpm

s390x: dovecot-debuginfo-2.0.9-2.el6_1.1.s390x.rpm dovecot-devel-2.0.9-2.el6_1.1.s390x.rpm

x86_64: dovecot-debuginfo-2.0.9-2.el6_1.1.x86_64.rpm dovecot-devel-2.0.9-2.el6_1.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/dovecot-2.0.9-2.el6_1.1.src.rpm

i386: dovecot-2.0.9-2.el6_1.1.i686.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm dovecot-mysql-2.0.9-2.el6_1.1.i686.rpm dovecot-pgsql-2.0.9-2.el6_1.1.i686.rpm dovecot-pigeonhole-2.0.9-2.el6_1.1.i686.rpm

x86_64: dovecot-2.0.9-2.el6_1.1.i686.rpm dovecot-2.0.9-2.el6_1.1.x86_64.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm dovecot-debuginfo-2.0.9-2.el6_1.1.x86_64.rpm dovecot-mysql-2.0.9-2.el6_1.1.x86_64.rpm dovecot-pgsql-2.0.9-2.el6_1.1.x86_64.rpm dovecot-pigeonhole-2.0.9-2.el6_1.1.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/dovecot-2.0.9-2.el6_1.1.src.rpm

i386: dovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm dovecot-devel-2.0.9-2.el6_1.1.i686.rpm

x86_64: dovecot-debuginfo-2.0.9-2.el6_1.1.x86_64.rpm dovecot-devel-2.0.9-2.el6_1.1.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/#package

References:

https://www.redhat.com/security/data/cve/CVE-2011-1929.html https://access.redhat.com/security/updates/classification/#moderate

Contact:

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/

iD8DBQFOTW29XlSAg2UNWIIRAr8LAKCu85vT3BXBKZ1SRebWK7B9nG6OFQCfYR3k P3AdaDf2BpXnEhk2OL5DTpo= =eG31 -----END PGP SIGNATURE-----

-- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201110-04

                                        http://security.gentoo.org/

Severity: High Title: Dovecot: Multiple vulnerabilities Date: October 10, 2011 Bugs: #286844, #293954, #314533, #368653 ID: 201110-04

Synopsis

Multiple vulnerabilities were found in Dovecot, the worst of which allowing for remote execution of arbitrary code.

Affected packages

-------------------------------------------------------------------
 Package              /     Vulnerable     /            Unaffected
-------------------------------------------------------------------

1 net-mail/dovecot < 2.0.13 *>= 1.2.17 >= 2.0.13

Description

Multiple vulnerabilities have been discovered in Dovecot. Please review the CVE identifiers referenced below for details.

Impact

A remote attacker could exploit these vulnerabilities to cause the remote execution of arbitrary code, or a Denial of Service condition, to conduct directory traversal attacks, corrupt data, or disclose information.

Workaround

There is no known workaround at this time.

Resolution

All Dovecot 1 users should upgrade to the latest version:

# emerge --sync # emerge --ask --oneshot --verbose ">=net-mail/dovecot-1.2.17"

All Dovecot 2 users should upgrade to the latest version:

# emerge --sync # emerge --ask --oneshot --verbose ">=net-mail/dovecot-2.0.13"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since May 28, 2011. It is likely that your system is already no longer affected by this issue.

References

[ 1 ] CVE-2009-3235 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-3235 [ 2 ] CVE-2009-3897 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-3897 [ 3 ] CVE-2010-0745 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-0745 [ 4 ] CVE-2010-3304 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3304 [ 5 ] CVE-2010-3706 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3706 [ 6 ] CVE-2010-3707 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3707 [ 7 ] CVE-2010-3779 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3779 [ 8 ] CVE-2010-3780 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3780 [ 9 ] CVE-2011-1929 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1929 [ 10 ] CVE-2011-2166 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2166 [ 11 ] CVE-2011-2167 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2167

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-201110-04.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

License

The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5

.

Packages for 2009.0 are provided as of the Extended Maintenance Program. The verification of md5 checksums and GPG signatures is performed automatically for you.

All packages are signed by Mandriva for security. You can obtain the GPG public key of the Mandriva Security Team by executing:

gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

You can view other update advisories for Mandriva Linux at:

http://www.mandriva.com/security/advisories

If you want to report vulnerabilities, please contact

security_(at)_mandriva.com

Type Bits/KeyID Date User ID pub 1024D/22458A98 2000-07-10 Mandriva Security Team -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux)

iD8DBQFN3e9VmqjQ0CJFipgRAjwfAJ95TzNOzqcOHVs9I3gIj1PqbuH6+gCfaxLM TC22GorN3moiTA4Ska8YOLU= =2Q1M -----END PGP SIGNATURE-----

Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/ . ========================================================================== Ubuntu Security Notice USN-1143-1 June 02, 2011

dovecot vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

Ubuntu 11.04
Ubuntu 10.10
Ubuntu 10.04 LTS

Summary:

An attacker could send a crafted email message that could disrupt email service.

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 11.04: dovecot-common 1:1.2.15-3ubuntu2.1

Ubuntu 10.10: dovecot-common 1:1.2.12-1ubuntu8.2

Ubuntu 10.04 LTS: dovecot-common 1:1.2.9-1ubuntu6.4

In general, a standard system update will make all the necessary changes.

The oldstable distribution (lenny) is not affected.

For the stable distribution (squeeze), this problem has been fixed in version 1.2.15-7.

For the unstable distribution (sid), this problem has been fixed in version 2.0.13-1

Show details on source website

JSON

To clipboard

{
  "affected_products": {
    "_id": null,
    "data": [
      {
        "_id": null,
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        "scope": "eq",
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      },
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        "_id": null,
        "model": "dovecot",
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      },
      {
        "_id": null,
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      {
        "_id": null,
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      },
      {
        "_id": null,
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      {
        "_id": null,
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      },
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      },
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        "vendor": "dovecot",
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      }
    ],
    "sources": [
      {
        "db": "CNVD",
        "id": "CNVD-2011-2132"
      },
      {
        "db": "BID",
        "id": "47930"
      },
      {
        "db": "CNNVD",
        "id": "CNNVD-201105-250"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2011-001934"
      },
      {
        "db": "NVD",
        "id": "CVE-2011-1929"
      }
    ]
  },
  "configurations": {
    "_id": null,
    "data": [
      {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "cpe_match": [
              {
                "cpe22Uri": "cpe:/a:dovecot:dovecot",
                "vulnerable": true
              },
              {
                "cpe22Uri": "cpe:/o:turbolinux:turbolinux_appliance_server",
                "vulnerable": true
              },
              {
                "cpe22Uri": "cpe:/o:turbolinux:turbolinux_server",
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              },
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                "vulnerable": true
              },
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                "vulnerable": true
              },
              {
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                "vulnerable": true
              },
              {
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                "vulnerable": true
              },
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                "vulnerable": true
              },
              {
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                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      }
    ],
    "sources": [
      {
        "db": "JVNDB",
        "id": "JVNDB-2011-001934"
      }
    ]
  },
  "credits": {
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    "data": "Timo Sirainen",
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      {
        "db": "BID",
        "id": "47930"
      }
    ],
    "trust": 0.3
  },
  "cve": "CVE-2011-1929",
  "cvss": {
    "_id": null,
    "data": [
      {
        "cvssV2": [
          {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "author": "nvd@nist.gov",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "exploitabilityScore": 10.0,
            "id": "CVE-2011-1929",
            "impactScore": 2.9,
            "integrityImpact": "NONE",
            "severity": "MEDIUM",
            "trust": 1.8,
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          }
        ],
        "cvssV3": [],
        "severity": [
          {
            "author": "nvd@nist.gov",
            "id": "CVE-2011-1929",
            "trust": 1.0,
            "value": "MEDIUM"
          },
          {
            "author": "NVD",
            "id": "CVE-2011-1929",
            "trust": 0.8,
            "value": "Medium"
          },
          {
            "author": "CNNVD",
            "id": "CNNVD-201105-250",
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            "value": "MEDIUM"
          }
        ]
      }
    ],
    "sources": [
      {
        "db": "CNNVD",
        "id": "CNNVD-201105-250"
      },
      {
        "db": "JVNDB",
        "id": "JVNDB-2011-001934"
      },
      {
        "db": "NVD",
        "id": "CVE-2011-1929"
      }
    ]
  },
  "description": {
    "_id": null,
    "data": "lib-mail/message-header-parser.c in Dovecot 1.2.x before 1.2.17 and 2.0.x before 2.0.13 does not properly handle \u0027\\0\u0027 characters in header names, which allows remote attackers to cause a denial of service (daemon crash or mailbox corruption) via a crafted e-mail message. Dovecot is an open source IMAP and POP3 server for Linux/UNIX-like systems. Dovecot is prone to a denial-of-service vulnerability because it fails to properly parse message headers. \nA remote attacker can exploit this issue to crash the affected application, denying service to legitimate users. \nDovecot versions prior to 1.2.17 and 2.0.13 are vulnerable. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA1\n\n=====================================================================\n                   Red Hat Security Advisory\n\nSynopsis:          Moderate: dovecot security update\nAdvisory ID:       RHSA-2011:1187-01\nProduct:           Red Hat Enterprise Linux\nAdvisory URL:      https://rhn.redhat.com/errata/RHSA-2011-1187.html\nIssue date:        2011-08-18\nCVE Names:         CVE-2011-1929 \n=====================================================================\n\n1. Summary:\n\nUpdated dovecot packages that fix one security issue are now available for\nRed Hat Enterprise Linux 4, 5, and 6. \n\nThe Red Hat Security Response Team has rated this update as having moderate\nsecurity impact. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available from the CVE link in\nthe References section. \n\n2. Relevant releases/architectures:\n\nRHEL Desktop Workstation (v. 5 client) - i386, x86_64\nRed Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64\nRed Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64\nRed Hat Enterprise Linux Desktop version 4 - i386, x86_64\nRed Hat Enterprise Linux ES version 4 - i386, ia64, x86_64\nRed Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64\nRed Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64\nRed Hat Enterprise Linux WS version 4 - i386, ia64, x86_64\nRed Hat Enterprise Linux Workstation (v. 6) - i386, x86_64\nRed Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64\n\n3. \n(CVE-2011-1929)\n\nUsers of dovecot are advised to upgrade to these updated packages, which\ncontain a backported patch to resolve this issue. After installing the\nupdated packages, the dovecot service will be restarted automatically. \n\n4. Solution:\n\nBefore applying this update, make sure all previously-released errata\nrelevant to your system have been applied. \n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\n5. Bugs fixed (http://bugzilla.redhat.com/):\n\n706286 - CVE-2011-1929 dovecot: potential crash when parsing header names that contain NUL characters\n\n6. Package List:\n\nRed Hat Enterprise Linux AS version 4:\n\nSource:\nftp://updates.redhat.com/enterprise/4AS/en/os/SRPMS/dovecot-0.99.11-10.EL4.src.rpm\n\ni386:\ndovecot-0.99.11-10.EL4.i386.rpm\ndovecot-debuginfo-0.99.11-10.EL4.i386.rpm\n\nia64:\ndovecot-0.99.11-10.EL4.ia64.rpm\ndovecot-debuginfo-0.99.11-10.EL4.ia64.rpm\n\nppc:\ndovecot-0.99.11-10.EL4.ppc.rpm\ndovecot-debuginfo-0.99.11-10.EL4.ppc.rpm\n\ns390:\ndovecot-0.99.11-10.EL4.s390.rpm\ndovecot-debuginfo-0.99.11-10.EL4.s390.rpm\n\ns390x:\ndovecot-0.99.11-10.EL4.s390x.rpm\ndovecot-debuginfo-0.99.11-10.EL4.s390x.rpm\n\nx86_64:\ndovecot-0.99.11-10.EL4.x86_64.rpm\ndovecot-debuginfo-0.99.11-10.EL4.x86_64.rpm\n\nRed Hat Enterprise Linux Desktop version 4:\n\nSource:\nftp://updates.redhat.com/enterprise/4Desktop/en/os/SRPMS/dovecot-0.99.11-10.EL4.src.rpm\n\ni386:\ndovecot-0.99.11-10.EL4.i386.rpm\ndovecot-debuginfo-0.99.11-10.EL4.i386.rpm\n\nx86_64:\ndovecot-0.99.11-10.EL4.x86_64.rpm\ndovecot-debuginfo-0.99.11-10.EL4.x86_64.rpm\n\nRed Hat Enterprise Linux ES version 4:\n\nSource:\nftp://updates.redhat.com/enterprise/4ES/en/os/SRPMS/dovecot-0.99.11-10.EL4.src.rpm\n\ni386:\ndovecot-0.99.11-10.EL4.i386.rpm\ndovecot-debuginfo-0.99.11-10.EL4.i386.rpm\n\nia64:\ndovecot-0.99.11-10.EL4.ia64.rpm\ndovecot-debuginfo-0.99.11-10.EL4.ia64.rpm\n\nx86_64:\ndovecot-0.99.11-10.EL4.x86_64.rpm\ndovecot-debuginfo-0.99.11-10.EL4.x86_64.rpm\n\nRed Hat Enterprise Linux WS version 4:\n\nSource:\nftp://updates.redhat.com/enterprise/4WS/en/os/SRPMS/dovecot-0.99.11-10.EL4.src.rpm\n\ni386:\ndovecot-0.99.11-10.EL4.i386.rpm\ndovecot-debuginfo-0.99.11-10.EL4.i386.rpm\n\nia64:\ndovecot-0.99.11-10.EL4.ia64.rpm\ndovecot-debuginfo-0.99.11-10.EL4.ia64.rpm\n\nx86_64:\ndovecot-0.99.11-10.EL4.x86_64.rpm\ndovecot-debuginfo-0.99.11-10.EL4.x86_64.rpm\n\nRHEL Desktop Workstation (v. 5 client):\n\nSource:\nftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/dovecot-1.0.7-7.el5_7.1.src.rpm\n\ni386:\ndovecot-1.0.7-7.el5_7.1.i386.rpm\ndovecot-debuginfo-1.0.7-7.el5_7.1.i386.rpm\n\nx86_64:\ndovecot-1.0.7-7.el5_7.1.x86_64.rpm\ndovecot-debuginfo-1.0.7-7.el5_7.1.x86_64.rpm\n\nRed Hat Enterprise Linux (v. 5 server):\n\nSource:\nftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/dovecot-1.0.7-7.el5_7.1.src.rpm\n\ni386:\ndovecot-1.0.7-7.el5_7.1.i386.rpm\ndovecot-debuginfo-1.0.7-7.el5_7.1.i386.rpm\n\nia64:\ndovecot-1.0.7-7.el5_7.1.ia64.rpm\ndovecot-debuginfo-1.0.7-7.el5_7.1.ia64.rpm\n\nppc:\ndovecot-1.0.7-7.el5_7.1.ppc.rpm\ndovecot-debuginfo-1.0.7-7.el5_7.1.ppc.rpm\n\ns390x:\ndovecot-1.0.7-7.el5_7.1.s390x.rpm\ndovecot-debuginfo-1.0.7-7.el5_7.1.s390x.rpm\n\nx86_64:\ndovecot-1.0.7-7.el5_7.1.x86_64.rpm\ndovecot-debuginfo-1.0.7-7.el5_7.1.x86_64.rpm\n\nRed Hat Enterprise Linux Server (v. 6):\n\nSource:\nftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/dovecot-2.0.9-2.el6_1.1.src.rpm\n\ni386:\ndovecot-2.0.9-2.el6_1.1.i686.rpm\ndovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm\ndovecot-mysql-2.0.9-2.el6_1.1.i686.rpm\ndovecot-pgsql-2.0.9-2.el6_1.1.i686.rpm\ndovecot-pigeonhole-2.0.9-2.el6_1.1.i686.rpm\n\nppc64:\ndovecot-2.0.9-2.el6_1.1.ppc.rpm\ndovecot-2.0.9-2.el6_1.1.ppc64.rpm\ndovecot-debuginfo-2.0.9-2.el6_1.1.ppc.rpm\ndovecot-debuginfo-2.0.9-2.el6_1.1.ppc64.rpm\ndovecot-mysql-2.0.9-2.el6_1.1.ppc64.rpm\ndovecot-pgsql-2.0.9-2.el6_1.1.ppc64.rpm\ndovecot-pigeonhole-2.0.9-2.el6_1.1.ppc64.rpm\n\ns390x:\ndovecot-2.0.9-2.el6_1.1.s390.rpm\ndovecot-2.0.9-2.el6_1.1.s390x.rpm\ndovecot-debuginfo-2.0.9-2.el6_1.1.s390.rpm\ndovecot-debuginfo-2.0.9-2.el6_1.1.s390x.rpm\ndovecot-mysql-2.0.9-2.el6_1.1.s390x.rpm\ndovecot-pgsql-2.0.9-2.el6_1.1.s390x.rpm\ndovecot-pigeonhole-2.0.9-2.el6_1.1.s390x.rpm\n\nx86_64:\ndovecot-2.0.9-2.el6_1.1.i686.rpm\ndovecot-2.0.9-2.el6_1.1.x86_64.rpm\ndovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm\ndovecot-debuginfo-2.0.9-2.el6_1.1.x86_64.rpm\ndovecot-mysql-2.0.9-2.el6_1.1.x86_64.rpm\ndovecot-pgsql-2.0.9-2.el6_1.1.x86_64.rpm\ndovecot-pigeonhole-2.0.9-2.el6_1.1.x86_64.rpm\n\nRed Hat Enterprise Linux Server Optional (v. 6):\n\nSource:\nftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/dovecot-2.0.9-2.el6_1.1.src.rpm\n\ni386:\ndovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm\ndovecot-devel-2.0.9-2.el6_1.1.i686.rpm\n\nppc64:\ndovecot-debuginfo-2.0.9-2.el6_1.1.ppc64.rpm\ndovecot-devel-2.0.9-2.el6_1.1.ppc64.rpm\n\ns390x:\ndovecot-debuginfo-2.0.9-2.el6_1.1.s390x.rpm\ndovecot-devel-2.0.9-2.el6_1.1.s390x.rpm\n\nx86_64:\ndovecot-debuginfo-2.0.9-2.el6_1.1.x86_64.rpm\ndovecot-devel-2.0.9-2.el6_1.1.x86_64.rpm\n\nRed Hat Enterprise Linux Workstation (v. 6):\n\nSource:\nftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/dovecot-2.0.9-2.el6_1.1.src.rpm\n\ni386:\ndovecot-2.0.9-2.el6_1.1.i686.rpm\ndovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm\ndovecot-mysql-2.0.9-2.el6_1.1.i686.rpm\ndovecot-pgsql-2.0.9-2.el6_1.1.i686.rpm\ndovecot-pigeonhole-2.0.9-2.el6_1.1.i686.rpm\n\nx86_64:\ndovecot-2.0.9-2.el6_1.1.i686.rpm\ndovecot-2.0.9-2.el6_1.1.x86_64.rpm\ndovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm\ndovecot-debuginfo-2.0.9-2.el6_1.1.x86_64.rpm\ndovecot-mysql-2.0.9-2.el6_1.1.x86_64.rpm\ndovecot-pgsql-2.0.9-2.el6_1.1.x86_64.rpm\ndovecot-pigeonhole-2.0.9-2.el6_1.1.x86_64.rpm\n\nRed Hat Enterprise Linux Workstation Optional (v. 6):\n\nSource:\nftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/dovecot-2.0.9-2.el6_1.1.src.rpm\n\ni386:\ndovecot-debuginfo-2.0.9-2.el6_1.1.i686.rpm\ndovecot-devel-2.0.9-2.el6_1.1.i686.rpm\n\nx86_64:\ndovecot-debuginfo-2.0.9-2.el6_1.1.x86_64.rpm\ndovecot-devel-2.0.9-2.el6_1.1.x86_64.rpm\n\nThese packages are GPG signed by Red Hat for security.  Our key and \ndetails on how to verify the signature are available from\nhttps://access.redhat.com/security/team/key/#package\n\n7. References:\n\nhttps://www.redhat.com/security/data/cve/CVE-2011-1929.html\nhttps://access.redhat.com/security/updates/classification/#moderate\n\n8. Contact:\n\nThe Red Hat security contact is \u003csecalert@redhat.com\u003e.  More contact\ndetails at https://access.redhat.com/security/team/contact/\n\nCopyright 2011 Red Hat, Inc. \n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1.4.4 (GNU/Linux)\n\niD8DBQFOTW29XlSAg2UNWIIRAr8LAKCu85vT3BXBKZ1SRebWK7B9nG6OFQCfYR3k\nP3AdaDf2BpXnEhk2OL5DTpo=\n=eG31\n-----END PGP SIGNATURE-----\n\n\n--\nRHSA-announce mailing list\nRHSA-announce@redhat.com\nhttps://www.redhat.com/mailman/listinfo/rhsa-announce\n. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\nGentoo Linux Security Advisory                           GLSA 201110-04\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n                                            http://security.gentoo.org/\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\n Severity: High\n    Title: Dovecot: Multiple vulnerabilities\n     Date: October 10, 2011\n     Bugs: #286844, #293954, #314533, #368653\n       ID: 201110-04\n\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\nSynopsis\n========\n\nMultiple vulnerabilities were found in Dovecot, the worst of which\nallowing for remote execution of arbitrary code. \n\nAffected packages\n=================\n\n    -------------------------------------------------------------------\n     Package              /     Vulnerable     /            Unaffected\n    -------------------------------------------------------------------\n  1  net-mail/dovecot             \u003c 2.0.13                 *\u003e= 1.2.17\n                                                            \u003e= 2.0.13\n\nDescription\n===========\n\nMultiple vulnerabilities have been discovered in Dovecot. Please review\nthe CVE identifiers referenced below for details. \n\nImpact\n======\n\nA remote attacker could exploit these vulnerabilities to cause the\nremote execution of arbitrary code, or a Denial of Service condition,\nto conduct directory traversal attacks, corrupt data, or disclose\ninformation. \n\nWorkaround\n==========\n\nThere is no known workaround at this time. \n\nResolution\n==========\n\nAll Dovecot 1 users should upgrade to the latest version:\n\n  # emerge --sync\n  # emerge --ask --oneshot --verbose \"\u003e=net-mail/dovecot-1.2.17\"\n\nAll Dovecot 2 users should upgrade to the latest version:\n\n  # emerge --sync\n  # emerge --ask --oneshot --verbose \"\u003e=net-mail/dovecot-2.0.13\"\n\nNOTE: This is a legacy GLSA. Updates for all affected architectures are\navailable since May 28, 2011. It is likely that your system is already\nno longer affected by this issue. \n\nReferences\n==========\n\n[  1 ] CVE-2009-3235\n       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-3235\n[  2 ] CVE-2009-3897\n       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-3897\n[  3 ] CVE-2010-0745\n       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-0745\n[  4 ] CVE-2010-3304\n       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3304\n[  5 ] CVE-2010-3706\n       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3706\n[  6 ] CVE-2010-3707\n       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3707\n[  7 ] CVE-2010-3779\n       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3779\n[  8 ] CVE-2010-3780\n       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-3780\n[  9 ] CVE-2011-1929\n       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-1929\n[ 10 ] CVE-2011-2166\n       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2166\n[ 11 ] CVE-2011-2167\n       http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2167\n\nAvailability\n============\n\nThis GLSA and any updates to it are available for viewing at\nthe Gentoo Security Website:\n\n http://security.gentoo.org/glsa/glsa-201110-04.xml\n\nConcerns?\n=========\n\nSecurity is a primary focus of Gentoo Linux and ensuring the\nconfidentiality and security of our users\u0027 machines is of utmost\nimportance to us. Any security concerns should be addressed to\nsecurity@gentoo.org or alternatively, you may file a bug at\nhttps://bugs.gentoo.org. \n\nLicense\n=======\n\nCopyright 2011 Gentoo Foundation, Inc; referenced text\nbelongs to its owner(s). \n\nThe contents of this document are licensed under the\nCreative Commons - Attribution / Share Alike license. \n\nhttp://creativecommons.org/licenses/by-sa/2.5\n\n\n\n. \n \n Packages for 2009.0 are provided as of the Extended Maintenance\n Program.  The verification\n of md5 checksums and GPG signatures is performed automatically for you. \n\n All packages are signed by Mandriva for security.  You can obtain the\n GPG public key of the Mandriva Security Team by executing:\n\n  gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98\n\n You can view other update advisories for Mandriva Linux at:\n\n  http://www.mandriva.com/security/advisories\n\n If you want to report vulnerabilities, please contact\n\n  security_(at)_mandriva.com\n _______________________________________________________________________\n\n Type Bits/KeyID     Date       User ID\n pub  1024D/22458A98 2000-07-10 Mandriva Security Team\n  \u003csecurity*mandriva.com\u003e\n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1.4.9 (GNU/Linux)\n\niD8DBQFN3e9VmqjQ0CJFipgRAjwfAJ95TzNOzqcOHVs9I3gIj1PqbuH6+gCfaxLM\nTC22GorN3moiTA4Ska8YOLU=\n=2Q1M\n-----END PGP SIGNATURE-----\n\n_______________________________________________\nFull-Disclosure - We believe in it. \nCharter: http://lists.grok.org.uk/full-disclosure-charter.html\nHosted and sponsored by Secunia - http://secunia.com/\n. ==========================================================================\nUbuntu Security Notice USN-1143-1\nJune 02, 2011\n\ndovecot vulnerability\n==========================================================================\n\nA security issue affects these releases of Ubuntu and its derivatives:\n\n- Ubuntu 11.04\n- Ubuntu 10.10\n- Ubuntu 10.04 LTS\n\nSummary:\n\nAn attacker could send a crafted email message that could disrupt email\nservice. \n\nUpdate instructions:\n\nThe problem can be corrected by updating your system to the following\npackage versions:\n\nUbuntu 11.04:\n  dovecot-common                  1:1.2.15-3ubuntu2.1\n\nUbuntu 10.10:\n  dovecot-common                  1:1.2.12-1ubuntu8.2\n\nUbuntu 10.04 LTS:\n  dovecot-common                  1:1.2.9-1ubuntu6.4\n\nIn general, a standard system update will make all the necessary changes. \n\n\nThe oldstable distribution (lenny) is not affected. \n\nFor the stable distribution (squeeze), this problem has been fixed in\nversion 1.2.15-7. \n\nFor the unstable distribution (sid), this problem has been fixed in\nversion 2.0.13-1",
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        "trust": 0.1,
        "url": "https://nvd.nist.gov/vuln/detail/cve-2009-3235"
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      {
        "trust": 0.1,
        "url": "http://store.mandriva.com/product_info.php\\?cpath=149\\\u0026amp;products_id=490"
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        "trust": 0.1,
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}

Search criteria

146 vulnerabilities found for Dovecot by Dovecot

CVE-2026-42006 (GCVE-0-2026-42006)

CVE-2026-40020 (GCVE-0-2026-40020)

CVE-2026-40016 (GCVE-0-2026-40016)

CVE-2026-33603 (GCVE-0-2026-33603)

CVE-2026-27851 (GCVE-0-2026-27851)

CVE-2026-27860 (GCVE-0-2026-27860)

CVE-2026-27859 (GCVE-0-2026-27859)

CVE-2026-27858 (GCVE-0-2026-27858)

CVE-2026-27857 (GCVE-0-2026-27857)

CVE-2026-27856 (GCVE-0-2026-27856)

CVE-2026-27855 (GCVE-0-2026-27855)

CVE-2026-24031 (GCVE-0-2026-24031)

CVE-2026-0394 (GCVE-0-2026-0394)

CVE-2025-59032 (GCVE-0-2025-59032)

CVE-2025-59031 (GCVE-0-2025-59031)

CVE-2025-59028 (GCVE-0-2025-59028)

CVE-2026-42006 (GCVE-0-2026-42006)

CVE-2026-40020 (GCVE-0-2026-40020)

CVE-2026-40016 (GCVE-0-2026-40016)

CVE-2026-33603 (GCVE-0-2026-33603)

CVE-2026-27851 (GCVE-0-2026-27851)

CVE-2026-27860 (GCVE-0-2026-27860)

CVE-2026-27859 (GCVE-0-2026-27859)

CVE-2026-27858 (GCVE-0-2026-27858)

CVE-2026-27857 (GCVE-0-2026-27857)

CVE-2026-27856 (GCVE-0-2026-27856)

CVE-2026-27855 (GCVE-0-2026-27855)

CVE-2026-24031 (GCVE-0-2026-24031)

CVE-2026-0394 (GCVE-0-2026-0394)

VAR-201105-0095

Synopsis

Affected packages

Description

Impact

Workaround

Resolution

References

Availability

Concerns?

License

dovecot vulnerability