Skip to content
Heist/ feed
Back to feed
HighFix available

openldap — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2019-13565

An issue was discovered in OpenLDAP 2.x before 2.4.48. When using SASL authentication and session encryption, and relying on the SASL security layers in slapd access controls, it is possible to obtain access that would otherwise be denied via a simple bind for any identity covered in those ACLs. After the first SASL bind is completed, the sasl_ssf value is retained for all new non-SASL connections. Depending on the ACL configuration, this can affect different types of operations (searches, modifications, etc.). In other words, a successful authorization step completed by one user affects the authorization requirement for a different user.

Products
openldap
Affected versions
Not specified
Fixed versions
2.4.48+dfsg-1
CVEs
CVE-2019-13565
Confirmed fixed CVEs
Not specified
Updated in this feed
30 Oct 2026, 14:22 UTC · Revision 1

Source evidence

DEBIAN-CVE-2019-13565

core-osv · Original source

Published 26 Jul 2019, 13:15 UTC

An issue was discovered in OpenLDAP 2.x before 2.4.48. When using SASL authentication and session encryption, and relying on the SASL security layers in slapd access controls, it is possible to obtain access that would otherwise be denied via a simple bind for any identity covered in those ACLs. After the first SASL bind is completed, the sasl_ssf value is retained for all new non-SASL connections. Depending on the ACL configuration, this can affect different types of operations (searches, modifications, etc.). In other words, a successful authorization step completed by one user affects the authorization requirement for a different user.

osv:DEBIAN-CVE-2019-13565

openldap

Fixed versions: 2.4.48+dfsg-1

openldap

Fixed versions: 2.4.48+dfsg-1

openldap

Fixed versions: 2.4.48+dfsg-1

Complete source record
{
  "id": "2fad607e30a8562b7d6dbd67d4499b9aefa4d6a360ddc5a7aaff2ad43a1f2737",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2019-13565",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2019-13565",
    "summary": "An issue was discovered in OpenLDAP 2.x before 2.4.48. When using SASL authentication and session encryption, and relying on the SASL security layers in slapd access controls, it is possible to obtain access that would otherwise be denied via a simple bind for any identity covered in those ACLs. After the first SASL bind is completed, the sasl_ssf value is retained for all new non-SASL connections. Depending on the ACL configuration, this can affect different types of operations (searches, modifications, etc.). In other words, a successful authorization step completed by one user affects the authorization requirement for a different user.",
    "evidence": "osv:DEBIAN-CVE-2019-13565",
    "products": [
      {
        "name": {
          "value": "openldap",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.4.48+dfsg-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "openldap",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.4.48+dfsg-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "openldap",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.4.48+dfsg-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2019-13565",
      "aliases": [
        "DEBIAN-CVE-2019-13565"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.4.48+dfsg-1"
                }
              ]
            }
          ],
          "package": {
            "name": "openldap",
            "purl": "pkg:deb/debian/openldap?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2019-13565.json"
          },
          "ecosystem_specific": {
            "urgency": "low"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.4.48+dfsg-1"
                }
              ]
            }
          ],
          "package": {
            "name": "openldap",
            "purl": "pkg:deb/debian/openldap?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2019-13565.json"
          },
          "ecosystem_specific": {
            "urgency": "low"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.4.48+dfsg-1"
                }
              ]
            }
          ],
          "package": {
            "name": "openldap",
            "purl": "pkg:deb/debian/openldap?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2019-13565.json"
          },
          "ecosystem_specific": {
            "urgency": "low"
          }
        }
      ],
      "modified": "2026-10-15T07:47:32.314700439Z",
      "provider": "osv",
      "upstream": [
        "CVE-2019-13565"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2019-13565"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2019-13565",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 322222,
  "published_at": "2019-07-26T13:15:12.72+00:00"
}