Low [CVE-2026-11792] 389-ds-base: 389-ds-base: heap buffer overflow in audit log password masking (create_masked_entry_string)
This low-severity Red Hat Linux advisory covers CVE-2026-11792 affecting Red Hat Directory Server 12, Red Hat Directory Server 13, Red Hat Enterprise Linux 10.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published
Summary
A heap buffer overflow flaw was found in 389 Directory Server. When audit logging is enabled, the create_masked_entry_string() function in auditlog.c copies a fixed-length password mask into a precisely-sized heap buffer without checking available space.
If a short cleartext password is logged (requiring non-default CLEAR password storage or a compromised replication peer), the copy overflows the buffer, corrupting heap memory and audit log output. Red Hat severity: Low — CVSS 3.3 (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:L).
Weakness: CWE-122. Affected Red Hat products: Red Hat Directory Server 12; Red Hat Directory Server 13; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 9.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: 389-ds-base.
Is CVE-2026-11792 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2026-11792 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2026-11792?
The advisory VulniPulse tracks names no fixed release. Follow Red Hat's guidance for workarounds and updates.
Confirm against the vendor advisory before you patch.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 3 days ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists. Confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 3 days ago·verify at source
Mitigation checklist
- Do not use passwordStorageScheme=CLEAR (default PBKDF2-SHA512 produces hashes longer than 23 bytes). Disable audit logging if not required. Monitor replication agreements for unauthorized peers.
Official advisory · high-confidence parse· fetched 3 days ago·verify at source
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