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.

Project Subscriptions

Vendors Products
Directory Server Subscribe
Enterprise Linux Subscribe
Redhat Directory Server Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

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.

History

Tue, 09 Jun 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat redhat Directory Server
Vendors & Products Redhat redhat Directory Server

Tue, 09 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 09 Jun 2026 13:30:00 +0000

Type Values Removed Values Added
Description 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.
Title 389-ds-base: 389-ds-base: heap buffer overflow in audit log password masking (create_masked_entry_string)
First Time appeared Redhat
Redhat directory Server
Redhat enterprise Linux
Weaknesses CWE-122
CPEs cpe:/a:redhat:directory_server:11
cpe:/a:redhat:directory_server:12
cpe:/a:redhat:directory_server:13
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat directory Server
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 3.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:L'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-06-09T13:35:31.641Z

Reserved: 2026-06-09T13:02:09.570Z

Link: CVE-2026-11792

cve-icon Vulnrichment

Updated: 2026-06-09T13:35:28.819Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-09T14:16:37.353

Modified: 2026-06-09T14:42:21.530

Link: CVE-2026-11792

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-09T20:20:36Z

Weaknesses