389-ds-base: 389-ds-base: non-constant-time comparison in pbkdf2-sha256 password verification
Priority LOW 18CWE-208Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Deferred Red Hat: fix deferred
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-208.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00359 29th percentileScored 2026-11-07
Fix Deferred Red Hat: fix deferred
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat Directory Server 11 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Directory Server 12 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Directory Server 13 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 10 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | Not affected | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | No fix listed | CNA |
- Red Hat Directory Server 11 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Directory Server 12 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Directory Server 13 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:redhat:directory_server:11.0:*:*:*:*:*:*:* | 11.0 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:directory_server:12.0:*:*:*:*:*:*:* | 12.0 | Vulnerable | Red Hat |
| cpe:2.3:a:redhat:directory_server:13.0:*:*:*:*:*:*:* | 13.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:389_directory_server:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Red Hat |
- cpe:2.3:a:redhat:directory_server:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:directory_server:12.0:*:*:*:*:*:*:* Versions 12.0 Vulnerable ·Red Hat
- cpe:2.3:a:redhat:directory_server:13.0:*:*:*:*:*:*:* Versions 13.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:389_directory_server:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Red Hat
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Directory Server 11 | Affected | No fix yet: Fix deferred |
| Red Hat Directory Server 12 | Affected | No fix yet: Fix deferred |
| Red Hat Directory Server 13 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 1 product
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2026-15041
- 2026-10-03 Alias added: GHSA-j5fh-pqqw-m384
References
More Red Hat 389 Directory Server vulnerabilities
- TI-2026-13229 Stack-based buffer overflow in Red Hat Directory Server 11.5 E4S for RHEL 8 CVSS 3.1HIGH 7.5
- TI-2026-07965 Resource allocation without limits in 389-ds-base CVSS 3.1HIGH 7.5
- TI-2026-10157 389-ds-base: 389-ds-base: pre-auth ldap filter injection in cleanallruv status check CVSS 3.1HIGH 7.5
- TI-2024-05784 389-ds-base: unauthenticated user can trigger a dos by sending a specific extended search request CVSS 3.1MEDIUM 6.5
- TI-2022-01808 Authorization bypass in 389-ds-base CVSS 3.1HIGH 7.5
- TI-2010-02131 NULL pointer dereference in Red Hat Directory Server CVSS 3.1HIGH 7.5
Sources
- CVE-2026-15041 · CVE Program
- CVE-2026-15041 · NVD
- FIRST EPSS
- GHSA-j5fh-pqqw-m384 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-15041 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences