CVE-2026-11793

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.

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Produits concernés

• Red Hat Directory Server 11
• Red Hat Directory Server 12
• Red Hat Directory Server 13
• Red Hat Enterprise Linux 10
• Red Hat Enterprise Linux 6
• Red Hat Enterprise Linux 7
• Red Hat Enterprise Linux 8
• Red Hat Enterprise Linux 9
• Redhat 389 directory server

Scores CVSS

Faiblesses (CWE)

• CWE-121

Références

• https://access.redhat.com/security/cve/CVE-2026-11793 Vendor Advisory
• https://bugzilla.redhat.com/show_bug.cgi?id=2484914 Issue TrackingVendor Advisory

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories