ubuntu-cve-2020-36223
Vulnerability from osv_ubuntu
Published
2021-01-26 18:15
Modified
2026-04-22 07:39
Summary
Details

A flaw was discovered in OpenLDAP before 2.4.57 leading to a slapd crash in the Values Return Filter control handling, resulting in denial of service (double free and out-of-bounds read).

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 with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "ldap-utils",
            "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm7"
          },
          {
            "binary_name": "libldap-2.4-2",
            "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm7"
          },
          {
            "binary_name": "slapd",
            "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm7"
          },
          {
            "binary_name": "slapd-smbk5pwd",
            "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "openldap",
        "purl": "pkg:deb/ubuntu/openldap@2.4.31-1+nmu2ubuntu8.5+esm7?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.31-1+nmu2ubuntu8.5+esm7"
            }
          ],
          "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",
        "2.4.31-1+nmu2ubuntu8.5+esm2",
        "2.4.31-1+nmu2ubuntu8.5+esm3",
        "2.4.31-1+nmu2ubuntu8.5+esm4",
        "2.4.31-1+nmu2ubuntu8.5+esm5",
        "2.4.31-1+nmu2ubuntu8.5+esm6"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ldap-utils",
            "binary_version": "2.4.42+dfsg-2ubuntu3.12"
          },
          {
            "binary_name": "libldap-2.4-2",
            "binary_version": "2.4.42+dfsg-2ubuntu3.12"
          },
          {
            "binary_name": "slapd",
            "binary_version": "2.4.42+dfsg-2ubuntu3.12"
          },
          {
            "binary_name": "slapd-smbk5pwd",
            "binary_version": "2.4.42+dfsg-2ubuntu3.12"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "openldap",
        "purl": "pkg:deb/ubuntu/openldap@2.4.42+dfsg-2ubuntu3.12?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.42+dfsg-2ubuntu3.12"
            }
          ],
          "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",
        "2.4.42+dfsg-2ubuntu3.8",
        "2.4.42+dfsg-2ubuntu3.9",
        "2.4.42+dfsg-2ubuntu3.10",
        "2.4.42+dfsg-2ubuntu3.11"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ldap-utils",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
          },
          {
            "binary_name": "libldap-2.4-2",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
          },
          {
            "binary_name": "libldap-common",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
          },
          {
            "binary_name": "slapd",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
          },
          {
            "binary_name": "slapd-smbk5pwd",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "openldap",
        "purl": "pkg:deb/ubuntu/openldap@2.4.45+dfsg-1ubuntu1.9?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.45+dfsg-1ubuntu1.9"
            }
          ],
          "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",
        "2.4.45+dfsg-1ubuntu1.5",
        "2.4.45+dfsg-1ubuntu1.6",
        "2.4.45+dfsg-1ubuntu1.7",
        "2.4.45+dfsg-1ubuntu1.8"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ldap-utils",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
          },
          {
            "binary_name": "libldap-2.4-2",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
          },
          {
            "binary_name": "libldap-common",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
          },
          {
            "binary_name": "slapd",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
          },
          {
            "binary_name": "slapd-contrib",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
          },
          {
            "binary_name": "slapd-smbk5pwd",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "openldap",
        "purl": "pkg:deb/ubuntu/openldap@2.4.49+dfsg-2ubuntu1.6?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.4.49+dfsg-2ubuntu1.6"
            }
          ],
          "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",
        "2.4.49+dfsg-2ubuntu1.2",
        "2.4.49+dfsg-2ubuntu1.3",
        "2.4.49+dfsg-2ubuntu1.4",
        "2.4.49+dfsg-2ubuntu1.5"
      ]
    }
  ],
  "aliases": [],
  "details": "A flaw was discovered in OpenLDAP before 2.4.57 leading to a slapd crash in the Values Return Filter control handling, resulting in denial of service (double free and out-of-bounds read).",
  "id": "UBUNTU-CVE-2020-36223",
  "modified": "2026-04-22T07:39:40Z",
  "published": "2021-01-26T18:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-36223"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4724-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-36223"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7698-1"
    }
  ],
  "related": [
    "USN-4724-1",
    "USN-7698-1"
  ],
  "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-2020-36223"
  ]
}



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