CVE-2026-15041
389-ds-base: 389-ds-base: non-constant-time comparison in pbkdf2-sha256 password verification
- State
- Published
- Severity
- 3.7 Low
- Published
- Jul 8, 2026
- Updated
- Jul 8, 2026
- Reserved
- Jul 8, 2026
Description
A flaw was found in 389 Directory Server. The PBKDF2-SHA256 password verification function uses standard memcmp() for comparing password hashes instead of a constant-time comparison function. A remote attacker could potentially use timing measurements of LDAP bind attempts to infer partial hash information, though practical exploitation is extremely difficult due to PBKDF2 computational overhead.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 3.7 Low | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N | redhat |
Weaknesses
- CWE-208 Observable Timing Discrepancy
Affected Products
| Product | Versions |
|---|---|
Red Hat Directory Server 11Red Hat | |
Red Hat Directory Server 12Red Hat | |
Red Hat Directory Server 13Red Hat | |
Red Hat Enterprise Linux 10Red Hat | |
Red Hat Enterprise Linux 6Red Hat | |
Red Hat Enterprise Linux 7Red Hat | |
Red Hat Enterprise Linux 8Red Hat | |
Red Hat Enterprise Linux 9Red Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-15041vdb-entry
- RHBZ#2498022issue-tracking
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