CVE-2025-1390 pam_cap: Fix potential configuration parsing error
Attackers can achieve local privilege escalation by exploiting a parsing error in the pam_cap module when capability.conf is configured.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-1390?
CVE-2025-1390 is a medium-severity vulnerability in OpenAnolis Anolis OS, published on 18 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The PAM module pam_cap.so of libcap configuration supports group names starting with “@”, during actual parsing, configurations not starting with “@” are incorrectly recognized as group names. This may result in nonintended users being granted an inherited capability set, potentially leading to security risks. Attackers can exploit this vulnerability to achieve local privilege escalation on systems where /etc/security/capability.conf is used to configure user inherited privileges by constructing specific usernames.
Weakness: CWE-284
Which versions are affected by CVE-2025-1390?
How do I fix CVE-2025-1390?
Apply the vendor's patch.
Is CVE-2025-1390 being exploited?
There is no known exploitation of CVE-2025-1390 in the wild and no public exploit code.
Sources
Also known as AZL-56916, AZL-57034, BELL-CVE-2025-1390, DEBIAN-CVE-2025-1390, ECHO-593e-d2f2-f6da, GHSA-cq92-4vj3-mcq8 and 4 more.