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389-ds-base — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2020-35518

When binding against a DN during authentication, the reply from 389-ds-base will be different whether the DN exists or not. This can be used by an unauthenticated attacker to check the existence of an entry in the LDAP database.

Products
389-ds-base
Affected versions
Not specified
Fixed versions
1.4.4.10-1
CVEs
CVE-2020-35518
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 13:15 UTC · Revision 1

Source evidence

DEBIAN-CVE-2020-35518

core-osv · Original source

Published 26 Mar 2021, 17:15 UTC

When binding against a DN during authentication, the reply from 389-ds-base will be different whether the DN exists or not. This can be used by an unauthenticated attacker to check the existence of an entry in the LDAP database.

osv:DEBIAN-CVE-2020-35518

389-ds-base

Fixed versions: 1.4.4.10-1

389-ds-base

Fixed versions: 1.4.4.10-1

Complete source record
{
  "id": "a2aac684f28fc9933e3c897a1a51604827f9e81dfe77cb3aa196ec6aac1491c1",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-35518",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2020-35518",
    "summary": "When binding against a DN during authentication, the reply from 389-ds-base will be different whether the DN exists or not. This can be used by an unauthenticated attacker to check the existence of an entry in the LDAP database.",
    "evidence": "osv:DEBIAN-CVE-2020-35518",
    "products": [
      {
        "name": {
          "value": "389-ds-base",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.4.4.10-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "389-ds-base",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.4.4.10-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2020-35518",
      "aliases": [
        "DEBIAN-CVE-2020-35518"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.4.4.10-1"
                }
              ]
            }
          ],
          "package": {
            "name": "389-ds-base",
            "purl": "pkg:deb/debian/389-ds-base?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-35518.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.4.4.10-1"
                }
              ]
            }
          ],
          "package": {
            "name": "389-ds-base",
            "purl": "pkg:deb/debian/389-ds-base?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-35518.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-26T12:02:13.751702550Z",
      "provider": "osv",
      "upstream": [
        "CVE-2020-35518"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2020-35518"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2020-35518",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 452044,
  "published_at": "2021-03-26T17:15:12.28+00:00"
}