ubuntu-cve-2026-14940
Vulnerability from osv_ubuntu
Published
2026-07-07 15:16
Modified
2026-07-10 22:21
Summary
Details

A heap-buffer-overflow flaw was found in 389 Directory Server (389-ds-base). When normalizing a Distinguished Name (DN) that contains a legacy-quoted value encoding a multivalued nested Relative Distinguished Name (RDN), the server can write past the end of a heap allocation while sorting RDN attribute-value pairs. An unauthenticated remote attacker can trigger this condition by sending an LDAP operation whose DN reaches the DN normalization routine, such as a search with a crafted base DN. This can corrupt heap memory and may cause denial of service.

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

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "389-ds",
            "binary_version": "1.3.4.9-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "389-ds-base",
            "binary_version": "1.3.4.9-1ubuntu0.1~esm1"
          },
          {
            "binary_name": "389-ds-base-libs",
            "binary_version": "1.3.4.9-1ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "389-ds-base",
        "purl": "pkg:deb/ubuntu/389-ds-base@1.3.4.9-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.3.12-1build1",
        "1.3.3.13-1",
        "1.3.4.5-2",
        "1.3.4.8-1",
        "1.3.4.8-3",
        "1.3.4.8-3ubuntu1",
        "1.3.4.8-4",
        "1.3.4.9-1",
        "1.3.4.9-1ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "389-ds",
            "binary_version": "1.3.7.10-1ubuntu1+esm1"
          },
          {
            "binary_name": "389-ds-base",
            "binary_version": "1.3.7.10-1ubuntu1+esm1"
          },
          {
            "binary_name": "389-ds-base-libs",
            "binary_version": "1.3.7.10-1ubuntu1+esm1"
          },
          {
            "binary_name": "python3-dirsrvtests",
            "binary_version": "1.3.7.10-1ubuntu1+esm1"
          },
          {
            "binary_name": "python3-lib389",
            "binary_version": "1.3.7.10-1ubuntu1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "389-ds-base",
        "purl": "pkg:deb/ubuntu/389-ds-base@1.3.7.10-1ubuntu1+esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.7.5-1",
        "1.3.7.5-1build1",
        "1.3.7.5-1build2",
        "1.3.7.9-1",
        "1.3.7.10-1",
        "1.3.7.10-1ubuntu1",
        "1.3.7.10-1ubuntu1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "389-ds",
            "binary_version": "1.4.3.6-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "389-ds-base",
            "binary_version": "1.4.3.6-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "389-ds-base-libs",
            "binary_version": "1.4.3.6-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "cockpit-389-ds",
            "binary_version": "1.4.3.6-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "python3-lib389",
            "binary_version": "1.4.3.6-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "389-ds-base",
        "purl": "pkg:deb/ubuntu/389-ds-base@1.4.3.6-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.4.1.6-4",
        "1.4.1.6-4build1",
        "1.4.2.4-1",
        "1.4.2.4-1build1",
        "1.4.3.2-1",
        "1.4.3.2-1build1",
        "1.4.3.6-2",
        "1.4.3.6-2ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "389-ds",
            "binary_version": "2.0.15-1ubuntu2"
          },
          {
            "binary_name": "389-ds-base",
            "binary_version": "2.0.15-1ubuntu2"
          },
          {
            "binary_name": "389-ds-base-libs",
            "binary_version": "2.0.15-1ubuntu2"
          },
          {
            "binary_name": "cockpit-389-ds",
            "binary_version": "2.0.15-1ubuntu2"
          },
          {
            "binary_name": "python3-lib389",
            "binary_version": "2.0.15-1ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "389-ds-base",
        "purl": "pkg:deb/ubuntu/389-ds-base@2.0.15-1ubuntu2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.4.4.11-2build1",
        "1.4.4.11-2build2",
        "1.4.4.17-1",
        "2.0.11-2",
        "2.0.14-1",
        "2.0.15-1",
        "2.0.15-1ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "389-ds",
            "binary_version": "2.4.5+dfsg1-1"
          },
          {
            "binary_name": "389-ds-base",
            "binary_version": "2.4.5+dfsg1-1"
          },
          {
            "binary_name": "389-ds-base-libs",
            "binary_version": "2.4.5+dfsg1-1"
          },
          {
            "binary_name": "cockpit-389-ds",
            "binary_version": "2.4.5+dfsg1-1"
          },
          {
            "binary_name": "python3-lib389",
            "binary_version": "2.4.5+dfsg1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "389-ds-base",
        "purl": "pkg:deb/ubuntu/389-ds-base@2.4.5+dfsg1-1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.3.4+dfsg1-1",
        "2.4.4+dfsg1-1ubuntu1",
        "2.4.4+dfsg1-1ubuntu4",
        "2.4.4+dfsg1-3",
        "2.4.5+dfsg1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "389-ds",
            "binary_version": "3.1.2+dfsg1-1"
          },
          {
            "binary_name": "389-ds-base",
            "binary_version": "3.1.2+dfsg1-1"
          },
          {
            "binary_name": "389-ds-base-libs",
            "binary_version": "3.1.2+dfsg1-1"
          },
          {
            "binary_name": "cockpit-389-ds",
            "binary_version": "3.1.2+dfsg1-1"
          },
          {
            "binary_name": "python3-lib389",
            "binary_version": "3.1.2+dfsg1-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "389-ds-base",
        "purl": "pkg:deb/ubuntu/389-ds-base@3.1.2+dfsg1-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.1.2+dfsg1-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "389-ds",
            "binary_version": "3.1.2+vendor1-2"
          },
          {
            "binary_name": "389-ds-base",
            "binary_version": "3.1.2+vendor1-2"
          },
          {
            "binary_name": "389-ds-base-libs",
            "binary_version": "3.1.2+vendor1-2"
          },
          {
            "binary_name": "cockpit-389-ds",
            "binary_version": "3.1.2+vendor1-2"
          },
          {
            "binary_name": "python3-lib389",
            "binary_version": "3.1.2+vendor1-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "389-ds-base",
        "purl": "pkg:deb/ubuntu/389-ds-base@3.1.2+vendor1-2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.1.2+dfsg1-1",
        "3.1.2+vendor1-2"
      ]
    }
  ],
  "aliases": [],
  "details": "A heap-buffer-overflow flaw was found in 389 Directory Server (389-ds-base). When normalizing a Distinguished Name (DN) that contains a legacy-quoted value encoding a multivalued nested Relative Distinguished Name (RDN), the server can write past the end of a heap allocation while sorting RDN attribute-value pairs. An unauthenticated remote attacker can trigger this condition by sending an LDAP operation whose DN reaches the DN normalization routine, such as a search with a crafted base DN. This can corrupt heap memory and may cause denial of service.",
  "id": "UBUNTU-CVE-2026-14940",
  "modified": "2026-07-10T22:21:42Z",
  "published": "2026-07-07T15:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-14940"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-14940"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2497697"
    }
  ],
  "related": [],
  "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:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-14940"
  ]
}



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