medium4.9
CVE-2026-11793
A stack buffer overflow flaw was found in 389 Directory Server.
Impact
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
| Vendor | Product | Affected versions |
|---|---|---|
| Redhat | 389 Directory Server | All versions |