Description
A flaw was found in 389 Directory Server. The PBKDF2-SHA256 password storage plugin does not enforce an upper bound on the iteration count extracted from stored password hashes. A privileged attacker who can modify a user's password hash can cause excessive CPU consumption during authentication, resulting in denial of service.
Problem types
Uncontrolled Resource Consumption
Product status
Timeline
| 2026-04-16: | Reported to Red Hat. |
| 2026-04-16: | Made public. |
References
access.redhat.com/security/cve/CVE-2026-11790
bugzilla.redhat.com/show_bug.cgi?id=2485421 (RHBZ#2485421)
redhat.atlassian.net/browse/PSIRTSUPT-7600