ubuntu-cve-2020-12243
Vulnerability from osv_ubuntu
Published
2020-04-28 19:15
Modified
2026-04-22 07:39
Summary
Details

In filter.c in slapd in OpenLDAP before 2.4.50, LDAP search filters with nested boolean expressions can result in denial of service (daemon crash).

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "ldap-utils",
            "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2"
          },
          {
            "binary_name": "libldap-2.4-2",
            "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2"
          },
          {
            "binary_name": "slapd",
            "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2"
          },
          {
            "binary_name": "slapd-smbk5pwd",
            "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "openldap",
        "purl": "pkg:deb/ubuntu/openldap@2.4.31-1+nmu2ubuntu8.5+esm2?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.31-1+nmu2ubuntu8.5+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.31-1+nmu2ubuntu3",
        "2.4.31-1+nmu2ubuntu4",
        "2.4.31-1+nmu2ubuntu5",
        "2.4.31-1+nmu2ubuntu8",
        "2.4.31-1+nmu2ubuntu8.1",
        "2.4.31-1+nmu2ubuntu8.2",
        "2.4.31-1+nmu2ubuntu8.3",
        "2.4.31-1+nmu2ubuntu8.4",
        "2.4.31-1+nmu2ubuntu8.5",
        "2.4.31-1+nmu2ubuntu8.5+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ldap-utils",
            "binary_version": "2.4.42+dfsg-2ubuntu3.8"
          },
          {
            "binary_name": "libldap-2.4-2",
            "binary_version": "2.4.42+dfsg-2ubuntu3.8"
          },
          {
            "binary_name": "slapd",
            "binary_version": "2.4.42+dfsg-2ubuntu3.8"
          },
          {
            "binary_name": "slapd-smbk5pwd",
            "binary_version": "2.4.42+dfsg-2ubuntu3.8"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "openldap",
        "purl": "pkg:deb/ubuntu/openldap@2.4.42+dfsg-2ubuntu3.8?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.42+dfsg-2ubuntu3.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.41+dfsg-1ubuntu2",
        "2.4.41+dfsg-1ubuntu3",
        "2.4.42+dfsg-2ubuntu1",
        "2.4.42+dfsg-2ubuntu3",
        "2.4.42+dfsg-2ubuntu3.1",
        "2.4.42+dfsg-2ubuntu3.2",
        "2.4.42+dfsg-2ubuntu3.3",
        "2.4.42+dfsg-2ubuntu3.4",
        "2.4.42+dfsg-2ubuntu3.5",
        "2.4.42+dfsg-2ubuntu3.6",
        "2.4.42+dfsg-2ubuntu3.7"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ldap-utils",
            "binary_version": "2.4.45+dfsg-1ubuntu1.5"
          },
          {
            "binary_name": "libldap-2.4-2",
            "binary_version": "2.4.45+dfsg-1ubuntu1.5"
          },
          {
            "binary_name": "libldap-common",
            "binary_version": "2.4.45+dfsg-1ubuntu1.5"
          },
          {
            "binary_name": "slapd",
            "binary_version": "2.4.45+dfsg-1ubuntu1.5"
          },
          {
            "binary_name": "slapd-smbk5pwd",
            "binary_version": "2.4.45+dfsg-1ubuntu1.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "openldap",
        "purl": "pkg:deb/ubuntu/openldap@2.4.45+dfsg-1ubuntu1.5?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.45+dfsg-1ubuntu1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.45+dfsg-1ubuntu1",
        "2.4.45+dfsg-1ubuntu1.1",
        "2.4.45+dfsg-1ubuntu1.2",
        "2.4.45+dfsg-1ubuntu1.3",
        "2.4.45+dfsg-1ubuntu1.4"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ldap-utils",
            "binary_version": "2.4.49+dfsg-2ubuntu1.2"
          },
          {
            "binary_name": "libldap-2.4-2",
            "binary_version": "2.4.49+dfsg-2ubuntu1.2"
          },
          {
            "binary_name": "libldap-common",
            "binary_version": "2.4.49+dfsg-2ubuntu1.2"
          },
          {
            "binary_name": "slapd",
            "binary_version": "2.4.49+dfsg-2ubuntu1.2"
          },
          {
            "binary_name": "slapd-contrib",
            "binary_version": "2.4.49+dfsg-2ubuntu1.2"
          },
          {
            "binary_name": "slapd-smbk5pwd",
            "binary_version": "2.4.49+dfsg-2ubuntu1.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "openldap",
        "purl": "pkg:deb/ubuntu/openldap@2.4.49+dfsg-2ubuntu1.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.49+dfsg-2ubuntu1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.48+dfsg-1ubuntu1",
        "2.4.48+dfsg-1ubuntu2",
        "2.4.48+dfsg-1ubuntu3",
        "2.4.48+dfsg-1ubuntu4",
        "2.4.49+dfsg-1ubuntu1",
        "2.4.49+dfsg-2ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "In filter.c in slapd in OpenLDAP before 2.4.50, LDAP search filters with nested boolean expressions can result in denial of service (daemon crash).",
  "id": "UBUNTU-CVE-2020-12243",
  "modified": "2026-04-22T07:39:23Z",
  "published": "2020-04-28T19:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-12243"
    },
    {
      "type": "REPORT",
      "url": "https://lists.openldap.org/hyperkitty/list/openldap-announce@openldap.org/thread/FUOYA6YCHBXMLANBJMSO22JD2NB22WGC/"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4352-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4352-2"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-12243"
    }
  ],
  "related": [
    "USN-4352-1",
    "USN-4352-2"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-12243"
  ]
}



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