Vulnerability-Lookup

CNVD-2021-01531

Vulnerability from cnvd - Published: 2021-01-08

Title

Dovecot拒绝服务漏洞（CNVD-2021-01531）

Description

Dovecot是一款开源IMAP和POP3邮件服务器，支持Linux/Unix系统。 Dovecot 2.3.13之前版本存在拒绝服务漏洞。该漏洞源于lda、lmtp和imap存在输入验证不当问题。攻击者可通过特制电子邮件利用该漏洞导致程序崩溃。

Severity

中

Patch Name

Dovecot拒绝服务漏洞（CNVD-2021-01531）的补丁

Patch Description

Dovecot是一款开源IMAP和POP3邮件服务器，支持Linux/Unix系统。 Dovecot 2.3.13之前版本存在拒绝服务漏洞。该漏洞源于lda、lmtp和imap存在输入验证不当问题。攻击者可通过特制电子邮件利用该漏洞导致程序崩溃。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://dovecot.org/pipermail/dovecot-news/2021-January/000451.html

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-25275

Impacted products

Name
Dovecot Dovecot <2.3.13

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-25275",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-25275"
    }
  },
  "description": "Dovecot\u662f\u4e00\u6b3e\u5f00\u6e90IMAP\u548cPOP3\u90ae\u4ef6\u670d\u52a1\u5668\uff0c\u652f\u6301Linux/Unix\u7cfb\u7edf\u3002\n\nDovecot 2.3.13\u4e4b\u524d\u7248\u672c\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8elda\u3001lmtp\u548cimap\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u4e0d\u5f53\u95ee\u9898\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u7279\u5236\u7535\u5b50\u90ae\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u7a0b\u5e8f\u5d29\u6e83\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://dovecot.org/pipermail/dovecot-news/2021-January/000451.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-01531",
  "openTime": "2021-01-08",
  "patchDescription": "Dovecot\u662f\u4e00\u6b3e\u5f00\u6e90IMAP\u548cPOP3\u90ae\u4ef6\u670d\u52a1\u5668\uff0c\u652f\u6301Linux/Unix\u7cfb\u7edf\u3002\r\n\r\nDovecot 2.3.13\u4e4b\u524d\u7248\u672c\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u6e90\u4e8elda\u3001lmtp\u548cimap\u5b58\u5728\u8f93\u5165\u9a8c\u8bc1\u4e0d\u5f53\u95ee\u9898\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u7279\u5236\u7535\u5b50\u90ae\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u7a0b\u5e8f\u5d29\u6e83\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Dovecot\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-01531\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Dovecot Dovecot \u003c2.3.13"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-25275",
  "serverity": "\u4e2d",
  "submitTime": "2021-01-05",
  "title": "Dovecot\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-01531\uff09"
}

CVE-2020-25275 (GCVE-0-2020-25275)

Vulnerability from cvelistv5 – Published: 2021-01-04 16:19 – Updated: 2024-08-04 15:33

Summary

Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

8 references

URL	Tags
https://dovecot.org/security	x_refsource_MISC
http://www.openwall.com/lists/oss-security/2021/01/04/3	x_refsource_CONFIRM
https://dovecot.org/pipermail/dovecot-news/2021-J…	x_refsource_CONFIRM
https://www.debian.org/security/2021/dsa-4825	vendor-advisoryx_refsource_DEBIAN
http://seclists.org/fulldisclosure/2021/Jan/18	mailing-listx_refsource_FULLDISC
http://packetstormsecurity.com/files/160841/Dovec…	x_refsource_MISC
https://security.gentoo.org/glsa/202101-01	vendor-advisoryx_refsource_GENTOO
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T15:33:05.386Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://dovecot.org/security"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2021/01/04/3"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://dovecot.org/pipermail/dovecot-news/2021-January/000451.html"
          },
          {
            "name": "DSA-4825",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2021/dsa-4825"
          },
          {
            "name": "20210106 CVE-2020-24386: IMAP hibernation allows accessing other peoples mail",
            "tags": [
              "mailing-list",
              "x_refsource_FULLDISC",
              "x_transferred"
            ],
            "url": "http://seclists.org/fulldisclosure/2021/Jan/18"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/160841/Dovecot-2.3.11.3-Denial-Of-Service.html"
          },
          {
            "name": "GLSA-202101-01",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202101-01"
          },
          {
            "name": "FEDORA-2021-c90cb486f7",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GXDKFLOCUP7I4ELGQ2F4P5TGC6NXMYV7/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
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      ],
      "descriptions": [
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          "lang": "en",
          "value": "Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts."
        }
      ],
      "problemTypes": [
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      "providerMetadata": {
        "dateUpdated": "2021-01-20T02:06:07.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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          "url": "https://dovecot.org/pipermail/dovecot-news/2021-January/000451.html"
        },
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            "x_refsource_DEBIAN"
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          "url": "https://www.debian.org/security/2021/dsa-4825"
        },
        {
          "name": "20210106 CVE-2020-24386: IMAP hibernation allows accessing other peoples mail",
          "tags": [
            "mailing-list",
            "x_refsource_FULLDISC"
          ],
          "url": "http://seclists.org/fulldisclosure/2021/Jan/18"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://packetstormsecurity.com/files/160841/Dovecot-2.3.11.3-Denial-Of-Service.html"
        },
        {
          "name": "GLSA-202101-01",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/202101-01"
        },
        {
          "name": "FEDORA-2021-c90cb486f7",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GXDKFLOCUP7I4ELGQ2F4P5TGC6NXMYV7/"
        }
      ],
      "x_legacyV4Record": {
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                  "value": "n/a"
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              "url": "https://dovecot.org/security"
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            },
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              "refsource": "CONFIRM",
              "url": "https://dovecot.org/pipermail/dovecot-news/2021-January/000451.html"
            },
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              "url": "https://www.debian.org/security/2021/dsa-4825"
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              "refsource": "FULLDISC",
              "url": "http://seclists.org/fulldisclosure/2021/Jan/18"
            },
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Action not permitted

CNVD-2021-01531

CVE-2020-25275 (GCVE-0-2020-25275)

Tags

Sightings

Nomenclature

Related by attack behaviour