{
  "cveId": "CVE-2021-27212",
  "url": "https://patchblox.com/security/cve/CVE-2021-27212",
  "summary": "CVE-2021-27212 is fixed in 17 products on 1 platform, first by ldap-utils 2.4.45\u002Bdfsg-1ubuntu1.10, released February 13, 2021. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "libldap2: In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertionfailure in slapd can occur in the issuerAndThisU...",
  "description": "In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertionfailure in slapd can occur in the issuerAndThisUpdateCheck function via acrafted packet, resulting in a denial of service (daemon exit) via a shorttimestamp. This is related to schema_init.c and checkTime.",
  "published": "2021-02-13T19:15:00Z",
  "severity": "Medium",
  "epss": 0.66114,
  "epssPercentile": 0.99281,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "ldap-utils",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.4.45\u002Bdfsg-1ubuntu1.10",
      "fix": "ldap-utils 2.4.45\u002Bdfsg-1ubuntu1.10",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-ldap-utils-2.4.45-dfsg-1ubuntu1.10",
      "released": "2021-02-13T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "ldap-utils",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.4.49\u002Bdfsg-2ubuntu1.7",
      "fix": "ldap-utils 2.4.49\u002Bdfsg-2ubuntu1.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-ldap-utils-2.4.49-dfsg-2ubuntu1.7",
      "released": "2021-02-13T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "ldap-utils",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "2.4.57\u002Bdfsg-2ubuntu1",
      "fix": "ldap-utils 2.4.57\u002Bdfsg-2ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-ldap-utils-2.4.57-dfsg-2ubuntu1",
      "released": "2026-01-16T01:42:22Z"
    },
    {
      "platform": "linux",
      "product": "ldap-utils",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "2.4.57\u002Bdfsg-2ubuntu1",
      "fix": "ldap-utils 2.4.57\u002Bdfsg-2ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-ldap-utils-2.4.57-dfsg-2ubuntu1",
      "released": "2026-01-16T01:42:24Z"
    },
    {
      "platform": "linux",
      "product": "libldap-2.4-2",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.4.45\u002Bdfsg-1ubuntu1.10",
      "fix": "libldap-2.4-2 2.4.45\u002Bdfsg-1ubuntu1.10",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libldap-2.4-2-2.4.45-dfsg-1ubuntu1.10",
      "released": "2021-02-13T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libldap-2.4-2",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.4.49\u002Bdfsg-2ubuntu1.7",
      "fix": "libldap-2.4-2 2.4.49\u002Bdfsg-2ubuntu1.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libldap-2.4-2-2.4.49-dfsg-2ubuntu1.7",
      "released": "2021-02-13T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libldap-common",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.4.45\u002Bdfsg-1ubuntu1.10",
      "fix": "libldap-common 2.4.45\u002Bdfsg-1ubuntu1.10",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libldap-common-2.4.45-dfsg-1ubuntu1.10",
      "released": "2021-02-13T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libldap-common",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.4.49\u002Bdfsg-2ubuntu1.7",
      "fix": "libldap-common 2.4.49\u002Bdfsg-2ubuntu1.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libldap-common-2.4.49-dfsg-2ubuntu1.7",
      "released": "2021-02-13T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libldap-common",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "2.4.57\u002Bdfsg-2ubuntu1",
      "fix": "libldap-common 2.4.57\u002Bdfsg-2ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-libldap-common-2.4.57-dfsg-2ubuntu1",
      "released": "2026-01-16T01:42:22Z"
    },
    {
      "platform": "linux",
      "product": "libldap-common",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "2.4.57\u002Bdfsg-2ubuntu1",
      "fix": "libldap-common 2.4.57\u002Bdfsg-2ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-libldap-common-2.4.57-dfsg-2ubuntu1",
      "released": "2026-01-16T01:42:24Z"
    },
    {
      "platform": "linux",
      "product": "libldap2",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "2.4.57\u002Bdfsg-2ubuntu1",
      "fix": "libldap2 2.4.57\u002Bdfsg-2ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-libldap2-2.4.57-dfsg-2ubuntu1",
      "released": "2026-01-16T01:42:22Z"
    },
    {
      "platform": "linux",
      "product": "libldap2",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "2.4.57\u002Bdfsg-2ubuntu1",
      "fix": "libldap2 2.4.57\u002Bdfsg-2ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-libldap2-2.4.57-dfsg-2ubuntu1",
      "released": "2026-01-16T01:42:24Z"
    },
    {
      "platform": "linux",
      "product": "openldap",
      "release": "amzn 2023",
      "fixedVersion": "2.4.57-6.amzn2023.0.4",
      "fix": "ALAS2023-2023-177",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-177",
      "released": "2023-04-27T20:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openldap-clients",
      "release": "amzn 2023",
      "fixedVersion": "2.4.57-6.amzn2023.0.4",
      "fix": "ALAS2023-2023-177",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-177",
      "released": "2023-04-27T20:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openldap-clients-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "2.4.57-6.amzn2023.0.4",
      "fix": "ALAS2023-2023-177",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-177",
      "released": "2023-04-27T20:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openldap-compat",
      "release": "amzn 2023",
      "fixedVersion": "2.4.57-6.amzn2023.0.4",
      "fix": "ALAS2023-2023-177",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-177",
      "released": "2023-04-27T20:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openldap-compat-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "2.4.57-6.amzn2023.0.4",
      "fix": "ALAS2023-2023-177",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-177",
      "released": "2023-04-27T20:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openldap-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "2.4.57-6.amzn2023.0.4",
      "fix": "ALAS2023-2023-177",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-177",
      "released": "2023-04-27T20:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openldap-debugsource",
      "release": "amzn 2023",
      "fixedVersion": "2.4.57-6.amzn2023.0.4",
      "fix": "ALAS2023-2023-177",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-177",
      "released": "2023-04-27T20:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openldap-devel",
      "release": "amzn 2023",
      "fixedVersion": "2.4.57-6.amzn2023.0.4",
      "fix": "ALAS2023-2023-177",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-177",
      "released": "2023-04-27T20:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openldap-servers",
      "release": "amzn 2023",
      "fixedVersion": "2.4.57-6.amzn2023.0.4",
      "fix": "ALAS2023-2023-177",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-177",
      "released": "2023-04-27T20:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openldap-servers-debuginfo",
      "release": "amzn 2023",
      "fixedVersion": "2.4.57-6.amzn2023.0.4",
      "fix": "ALAS2023-2023-177",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2023-177",
      "released": "2023-04-27T20:00:00Z"
    },
    {
      "platform": "linux",
      "product": "slapd",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.4.45\u002Bdfsg-1ubuntu1.10",
      "fix": "slapd 2.4.45\u002Bdfsg-1ubuntu1.10",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-slapd-2.4.45-dfsg-1ubuntu1.10",
      "released": "2021-02-13T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "slapd",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.4.49\u002Bdfsg-2ubuntu1.7",
      "fix": "slapd 2.4.49\u002Bdfsg-2ubuntu1.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-slapd-2.4.49-dfsg-2ubuntu1.7",
      "released": "2021-02-13T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "slapd",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "2.4.57\u002Bdfsg-2ubuntu1",
      "fix": "slapd 2.4.57\u002Bdfsg-2ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-slapd-2.4.57-dfsg-2ubuntu1",
      "released": "2026-01-16T01:42:22Z"
    },
    {
      "platform": "linux",
      "product": "slapd",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "2.4.57\u002Bdfsg-2ubuntu1",
      "fix": "slapd 2.4.57\u002Bdfsg-2ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-slapd-2.4.57-dfsg-2ubuntu1",
      "released": "2026-01-16T01:42:24Z"
    },
    {
      "platform": "linux",
      "product": "slapd-contrib",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.4.49\u002Bdfsg-2ubuntu1.7",
      "fix": "slapd-contrib 2.4.49\u002Bdfsg-2ubuntu1.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-slapd-contrib-2.4.49-dfsg-2ubuntu1.7",
      "released": "2021-02-13T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "slapd-contrib",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "2.4.57\u002Bdfsg-2ubuntu1",
      "fix": "slapd-contrib 2.4.57\u002Bdfsg-2ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-slapd-contrib-2.4.57-dfsg-2ubuntu1",
      "released": "2026-01-16T01:42:22Z"
    },
    {
      "platform": "linux",
      "product": "slapd-contrib",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "2.4.57\u002Bdfsg-2ubuntu1",
      "fix": "slapd-contrib 2.4.57\u002Bdfsg-2ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-slapd-contrib-2.4.57-dfsg-2ubuntu1",
      "released": "2026-01-16T01:42:24Z"
    },
    {
      "platform": "linux",
      "product": "slapd-smbk5pwd",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.4.45\u002Bdfsg-1ubuntu1.10",
      "fix": "slapd-smbk5pwd 2.4.45\u002Bdfsg-1ubuntu1.10",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-slapd-smbk5pwd-2.4.45-dfsg-1ubuntu1.10",
      "released": "2021-02-13T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "slapd-smbk5pwd",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.4.49\u002Bdfsg-2ubuntu1.7",
      "fix": "slapd-smbk5pwd 2.4.49\u002Bdfsg-2ubuntu1.7",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-slapd-smbk5pwd-2.4.49-dfsg-2ubuntu1.7",
      "released": "2021-02-13T19:15:00Z"
    },
    {
      "platform": "linux",
      "product": "slapd-smbk5pwd",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "2.4.57\u002Bdfsg-2ubuntu1",
      "fix": "slapd-smbk5pwd 2.4.57\u002Bdfsg-2ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-slapd-smbk5pwd-2.4.57-dfsg-2ubuntu1",
      "released": "2026-01-16T01:42:22Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}