4.9
Medium
CVE-2026-11793 A stack buffer overflow flaw was found in 389 Directory Server
Description
A stack buffer overflow flaw was found in 389 Directory Server. The checkPrefix() function in pw.c copies an attacker-controlled algorithm ID into a 256-byte stack buffer without bounds checking when parsing reversible-encrypted attribute values. An attacker with Directory Manager privileges can crash the LDAP server by storing a crafted credential with an oversized algorithm ID. FORTIFY_SOURCE mitigates this to denial of service only.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Directory Server 11 | Versions not published | |
| Red Hat Directory Server 12 | Versions not published | |
| Red Hat Directory Server 13 | Versions not published | |
| Red Hat Enterprise Linux 10 | Versions not published | |
| Red Hat Enterprise Linux 6 | Versions not published | |
| Red Hat Enterprise Linux 7 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published |
References
- access.redhat.com access.redhat.com
- RHBZ#2484914 bugzilla.redhat.com
Timeline
- Published
- Last modified
Other CVEs of Red Hat Directory Server 11
The 42 CVEs of Red Hat Directory Server 11 →
CVE-2026-117548
389-ds-base: 389-ds-base: null pointer dereference via modifydn using an attribute's schema alias name causes denial of service
6.5
Medium
CVE-2026-86345
389-ds-base: 389-ds-base: starttls plaintext-buffer retention allows on-path attacker to forge an ldap client's authentication result
9.0
Critical
CVE-2026-86344
389-ds-base: 389-ds-base: unauthenticated worker-thread-pool exhaustion via completed-operation-then-incomplete-pdu connection requeue
7.5
High
CVE-2026-19843
389-ds-base: 389-ds-base: command injection via unescaped ldap dn in cockpit 389 console ldap editor
8.4
High