pam_per_user before 0.4 does not verify if the user name changes between authentication…
Priority LOW 36Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
pam_per_user before 0.4 does not verify if the user name changes between authentication attempts and uses the same subrequest handle, which allows remote attackers or local users to login as other users by using certain applications that allow the username to be changed during authentication, such as /bin/login.
Why it matters now
EPSS 0.016 75th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mark_d._roth:pam_per_user:0.1:*:*:*:*:*:*:* | 0.1 | Vulnerable | Mark D. Roth |
| cpe:2.3:a:mark_d._roth:pam_per_user:0.2:*:*:*:*:*:*:* | 0.2 | Vulnerable | Mark D. Roth |
| cpe:2.3:a:mark_d._roth:pam_per_user:0.3:*:*:*:*:*:*:* | 0.3 | Vulnerable | Mark D. Roth |
- cpe:2.3:a:mark_d._roth:pam_per_user:0.1:*:*:*:*:*:*:* Versions 0.1 Vulnerable ·Mark D. Roth
- cpe:2.3:a:mark_d._roth:pam_per_user:0.2:*:*:*:*:*:*:* Versions 0.2 Vulnerable ·Mark D. Roth
- cpe:2.3:a:mark_d._roth:pam_per_user:0.3:*:*:*:*:*:*:* Versions 0.3 Vulnerable ·Mark D. Roth
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2005-2949
- 2026-10-03 Alias added: GHSA-4c48-9rfv-8pr3
References
Advisory 1
Sources
- CVE-2005-2949 · CVE Program
- CVE-2005-2949 · NVD
- FIRST EPSS
- GHSA-4c48-9rfv-8pr3 · GitHub Advisory Database · CC BY 4.0
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