Vulnerability-Lookup

OESA-2021-1119 (CVE-2021-27212)

Vulnerability from osv_openeuler – Published: 2021-04-07 11:04 – Updated: 2026-08-06 11:04 – Source website

Summary

openldap security update

Details

OpenLDAP is an open source suite of LDAP (Lightweight Directory Access Protocol) applications and development tools. LDAP is a set of protocols for accessing directory services (usually phone book style information, but other information is possible) over the Internet, similar to the way DNS (Domain Name System) information is propagated over the Internet. The openldap package contains configuration files, libraries, and documentation for OpenLDAP.

Security Fix(es):

In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion failure in slapd can occur in the issuerAndThisUpdateCheck function via a crafted packet, resulting in a denial of service (daemon exit) via a short timestamp. This is related to schema_init.c and checkTime.(CVE-2021-27212)

Severity

7.5 (High)


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

References

URL

Type

	https://openeuler.org/en/security/safety-bulletin…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-27212	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "openldap-2.4.50-4.oe1.aarch64.rpm",
          "openldap-devel-2.4.50-4.oe1.aarch64.rpm",
          "openldap-debuginfo-2.4.50-4.oe1.aarch64.rpm",
          "openldap-debugsource-2.4.50-4.oe1.aarch64.rpm",
          "openldap-clients-2.4.50-4.oe1.aarch64.rpm",
          "openldap-servers-2.4.50-4.oe1.aarch64.rpm",
          "openldap-servers-2.4.50-4.oe1.aarch64.rpm",
          "openldap-2.4.50-4.oe1.aarch64.rpm",
          "openldap-debugsource-2.4.50-4.oe1.aarch64.rpm",
          "openldap-clients-2.4.50-4.oe1.aarch64.rpm",
          "openldap-devel-2.4.50-4.oe1.aarch64.rpm",
          "openldap-debuginfo-2.4.50-4.oe1.aarch64.rpm"
        ],
        "noarch": [
          "openldap-help-2.4.50-4.oe1.noarch.rpm",
          "openldap-help-2.4.50-4.oe1.noarch.rpm"
        ],
        "src": [
          "openldap-2.4.50-4.oe1.src.rpm",
          "openldap-2.4.50-4.oe1.src.rpm"
        ],
        "x86_64": [
          "openldap-servers-2.4.50-4.oe1.x86_64.rpm",
          "openldap-2.4.50-4.oe1.x86_64.rpm",
          "openldap-debuginfo-2.4.50-4.oe1.x86_64.rpm",
          "openldap-debugsource-2.4.50-4.oe1.x86_64.rpm",
          "openldap-clients-2.4.50-4.oe1.x86_64.rpm",
          "openldap-devel-2.4.50-4.oe1.x86_64.rpm",
          "openldap-2.4.50-4.oe1.x86_64.rpm",
          "openldap-devel-2.4.50-4.oe1.x86_64.rpm",
          "openldap-clients-2.4.50-4.oe1.x86_64.rpm",
          "openldap-debuginfo-2.4.50-4.oe1.x86_64.rpm",
          "openldap-servers-2.4.50-4.oe1.x86_64.rpm",
          "openldap-debugsource-2.4.50-4.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS",
        "name": "openldap",
        "purl": "pkg:rpm/openEuler/openldap\u0026distro=openEuler-20.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.50-4.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "openldap-servers-2.4.50-4.oe1.aarch64.rpm",
          "openldap-2.4.50-4.oe1.aarch64.rpm",
          "openldap-debugsource-2.4.50-4.oe1.aarch64.rpm",
          "openldap-clients-2.4.50-4.oe1.aarch64.rpm",
          "openldap-devel-2.4.50-4.oe1.aarch64.rpm",
          "openldap-debuginfo-2.4.50-4.oe1.aarch64.rpm"
        ],
        "noarch": [
          "openldap-help-2.4.50-4.oe1.noarch.rpm"
        ],
        "src": [
          "openldap-2.4.50-4.oe1.src.rpm"
        ],
        "x86_64": [
          "openldap-2.4.50-4.oe1.x86_64.rpm",
          "openldap-devel-2.4.50-4.oe1.x86_64.rpm",
          "openldap-clients-2.4.50-4.oe1.x86_64.rpm",
          "openldap-debuginfo-2.4.50-4.oe1.x86_64.rpm",
          "openldap-servers-2.4.50-4.oe1.x86_64.rpm",
          "openldap-debugsource-2.4.50-4.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "openldap",
        "purl": "pkg:rpm/openEuler/openldap\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.50-4.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "OpenLDAP is an open source suite of LDAP (Lightweight Directory Access Protocol) applications and development tools. LDAP is a set of protocols for accessing directory services (usually phone book style information, but other information is possible) over the Internet, similar to the way DNS (Domain Name System) information is propagated over the Internet. The openldap package contains configuration files, libraries, and documentation for OpenLDAP.\r\n\r\nSecurity Fix(es):\r\n\r\nIn OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion failure in slapd can occur in the issuerAndThisUpdateCheck function via a crafted packet, resulting in a denial of service (daemon exit) via a short timestamp. This is related to schema_init.c and checkTime.(CVE-2021-27212)",
  "id": "OESA-2021-1119",
  "modified": "2026-08-06T11:04:21Z",
  "published": "2021-04-07T11:04:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1119"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-27212"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "openldap security update",
  "upstream": [
    "CVE-2021-27212"
  ]
}

CVE-2021-27212 (GCVE-0-2021-27212)

Vulnerability from cvelistv5 – Published: 2021-02-14 02:53 – Updated: 2024-08-03 20:40

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

8 references

URL	Tags
https://bugs.openldap.org/show_bug.cgi?id=9454	x_refsource_MISC
https://git.openldap.org/openldap/openldap/-/comm…	x_refsource_MISC
https://git.openldap.org/openldap/openldap/-/comm…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST
https://www.debian.org/security/2021/dsa-4860	vendor-advisoryx_refsource_DEBIAN
https://security.netapp.com/advisory/ntap-2021031…	x_refsource_CONFIRM
https://lists.apache.org/thread.html/rf4c02775860…	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r58af02e294b…	mailing-listx_refsource_MLIST

Show details on NVD website

JSON

To clipboard

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          },
          {
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            "url": "https://security.netapp.com/advisory/ntap-20210319-0005/"
          },
          {
            "name": "[bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8",
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    "cna": {
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  "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.

Detection rules are retrieved from Rulezet.

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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OESA-2021-1119 (CVE-2021-27212)

CVE-2021-27212 (GCVE-0-2021-27212)

Tags

Sightings

Nomenclature

Related by attack behaviour