CVE-2026-11789 (GCVE-0-2026-11789)

Vulnerability from cvelistv5 – Published: 2026-06-09 13:02 – Updated: 2026-06-30 13:38
VLAI
Title
389-ds-base: 389-ds-base: smd5 password storage plugin salt length integer underflow crash
Summary
A flaw was found in 389 Directory Server. The SMD5 password storage plugin performs unsigned integer underflow when computing salt length from a crafted password hash shorter than 16 bytes, causing a buffer over-read that crashes the LDAP server during authentication.
Severity
4.9 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-09 16:15 UTC
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1085 records in the last 180 days details
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-11789 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2485422 issue-trackingx_refsource_REDHAT
Impacted products
Date Public
2026-04-16 00:00
Credits
This issue was discovered by Ian Murphy (Red Hat).
Show details on NVD website
To clipboard 

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                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-06-30T13:38:21.484Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
          "references": [
            {
              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2026-11789"
            },
            {
              "name": "RHBZ#2485422",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2485422"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-04-16T00:00:00.000Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-04-16T00:00:00.000Z",
              "value": "Made public."
            }
          ],
          "title": "389-ds-base: 389-ds-base: smd5 password storage plugin salt length integer underflow crash",
          "workarounds": [
            {
              "lang": "en",
              "value": "Disable nsslapd-allow-hashed-passwords (default: off) to prevent non-DM users from setting pre-hashed passwords. Restrict Directory Manager credentials; limit DM access to management networks and audit DM operations via nsslapd-auditlog. Monitor for suspicious userPassword modifications. Migrate stored passwords from {SMD5} to {PBKDF2_SHA256} to eliminate the vulnerable code path for existing accounts."
            }
          ],
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-191: Integer Underflow (Wrap or Wraparound)"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-11789",
        "datePublished": "2026-06-09T13:02:59.276Z",
        "dateReserved": "2026-06-09T12:58:52.530Z",
        "dateUpdated": "2026-06-30T13:38:21.484Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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