{"id":"CVE-2026-11789","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 LDA…","severity":"medium","cvss":4.9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-191"],"vendor":"Red Hat","product":"redhat-ds:11/389-ds-base","affected":["redhat-ds:11/389-ds-base (all versions)","redhat-ds:12/389-ds-base (all versions)","389-ds-base (all versions)","389-ds-base (all versions)","389-ds-base","389-ds-base (all versions)","389-ds-base (all versions)","389-ds-base (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-06-09T16:15:56.091915Z"},"published":"2026-06-09","updated":"2026-11-05","sourceUpdated":"2026-11-05T16:22:36.680Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-11789","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-11789"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2485422","label":"RHBZ#2485422"}],"tags":["cve.org"],"epss":0.00282,"epssPercentile":0.20841,"ingestedAt":"2026-11-05T22:38:31.344Z","slug":"CVE-2026-11789","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `redhat-ds:11/389-ds-base (all versions)`\n- `redhat-ds:12/389-ds-base (all versions)`\n- `389-ds-base (all versions)`\n- `389-ds-base (all versions)`\n- `389-ds-base`\n- `389-ds-base (all versions)`\n- `389-ds-base (all versions)`\n- `389-ds-base (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nDisable 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.","depth":"sunlit","depthScore":27,"depthScoreParts":{"impact":27,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}