CVE-2025-24531
Publication date 7 February 2025
Last updated 21 January 2026
Ubuntu priority
Description
In OpenSC pam_pkcs11 before 0.6.13, pam_sm_authenticate() wrongly returns PAM_IGNORE in many error situations (such as an error triggered by a smartcard before login), allowing authentication bypass.
Read the notes from the security team
Why is this CVE high priority?
flaw would allow bypassing strong authentication
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| pam-pkcs11 | ||
| 24.04 LTS noble |
Fixed 0.6.12-2ubuntu0.24.04.1
|
|
| 22.04 LTS jammy |
Not affected
|
|
| 20.04 LTS focal |
Not affected
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
Notes
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
6.7 · Medium
|
| Attack vector | Local |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
References
Related Ubuntu Security Notices (USN)
- USN-7363-1
- PAM-PKCS#11 vulnerabilities
- 20 March 2025