# CVE-2025-1390: libcap2: The PAM module pam_cap.so of libcap configuration supports group namesstarting with “@”, during actual parsing, confi...

CVE-2025-1390 is fixed in 8 products on 1 platform, first by DEBIAN-CVE-2025-1390, released February 18, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-1390
- Priority: Routine
- CVSS: 6.1 (Medium)
- EPSS: 0.0018
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 18, 2025

## Description

The PAM module pam_cap.so of libcap configuration supports group namesstarting with “@”, during actual parsing, configurations not starting with“@” are incorrectly recognized as group names. This may result innonintended users being granted an inherited capability set, potentiallyleading to security risks. Attackers can exploit this vulnerability toachieve local privilege escalation on systems where/etc/security/capability.conf is used to configure user inheritedprivileges by constructing specific usernames.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libcap amzn 2023 | 2.48-2.amzn2023.0.4 | [ALAS2023-2025-897](https://patchblox.com/security/data/fix/linux/alas2023-2025-897.md) | Mar 13, 2025 |
| Linux | libcap-debuginfo amzn 2023 | 2.48-2.amzn2023.0.4 | [ALAS2023-2025-897](https://patchblox.com/security/data/fix/linux/alas2023-2025-897.md) | Mar 13, 2025 |
| Linux | libcap-debugsource amzn 2023 | 2.48-2.amzn2023.0.4 | [ALAS2023-2025-897](https://patchblox.com/security/data/fix/linux/alas2023-2025-897.md) | Mar 13, 2025 |
| Linux | libcap-devel amzn 2023 | 2.48-2.amzn2023.0.4 | [ALAS2023-2025-897](https://patchblox.com/security/data/fix/linux/alas2023-2025-897.md) | Mar 13, 2025 |
| Linux | libcap-static amzn 2023 | 2.48-2.amzn2023.0.4 | [ALAS2023-2025-897](https://patchblox.com/security/data/fix/linux/alas2023-2025-897.md) | Mar 13, 2025 |
| Linux | libcap2 Debian 12.15 (bookworm) | 1:2.66-4+deb12u1 | [DEBIAN-CVE-2025-1390](https://patchblox.com/security/data/fix/linux/debian-cve-2025-1390.md) | Feb 18, 2025 |
| Linux | libcap2 Debian 13.5 (trixie) | 1:2.73-4 | [DEBIAN-CVE-2025-1390](https://patchblox.com/security/data/fix/linux/debian-cve-2025-1390.md) | Feb 18, 2025 |
| Linux | libcap2 Debian 14 | 1:2.73-4 | [DEBIAN-CVE-2025-1390](https://patchblox.com/security/data/fix/linux/debian-cve-2025-1390.md) | Feb 18, 2025 |
| Linux | libcap2 Ubuntu 20.04 LTS (focal) | 1:2.32-1ubuntu0.2 | [libcap2 1:2.32-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcap2-1-2.32-1ubuntu0.2.md) | Feb 19, 2025 |
| Linux | libcap2 Ubuntu 22.04.1 LTS (jammy) | 1:2.44-1ubuntu0.22.04.2 | [libcap2 1:2.44-1ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcap2-1-2.44-1ubuntu0.22.04.2.md) | Feb 19, 2025 |
| Linux | libcap2 Ubuntu 24.04.5 LTS (noble) | 1:2.66-5ubuntu2.2 | [libcap2 1:2.66-5ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libcap2-1-2.66-5ubuntu2.2.md) | Feb 19, 2025 |
| Linux | libcap2 Ubuntu 24.10 (oracular) | 1:2.66-5ubuntu3.1 | [libcap2 1:2.66-5ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libcap2-1-2.66-5ubuntu3.1.md) | Feb 20, 2025 |
| Linux | libcap2-bin Ubuntu 20.04 LTS (focal) | 1:2.32-1ubuntu0.2 | [libcap2-bin 1:2.32-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcap2-bin-1-2.32-1ubuntu0.2.md) | Feb 19, 2025 |
| Linux | libcap2-bin Ubuntu 22.04.1 LTS (jammy) | 1:2.44-1ubuntu0.22.04.2 | [libcap2-bin 1:2.44-1ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcap2-bin-1-2.44-1ubuntu0.22.04.2.md) | Feb 19, 2025 |
| Linux | libcap2-bin Ubuntu 24.04.5 LTS (noble) | 1:2.66-5ubuntu2.2 | [libcap2-bin 1:2.66-5ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libcap2-bin-1-2.66-5ubuntu2.2.md) | Feb 19, 2025 |
| Linux | libcap2-bin Ubuntu 24.10 (oracular) | 1:2.66-5ubuntu3.1 | [libcap2-bin 1:2.66-5ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libcap2-bin-1-2.66-5ubuntu3.1.md) | Feb 20, 2025 |
| Linux | libpam-cap Ubuntu 20.04 LTS (focal) | 1:2.32-1ubuntu0.2 | [libpam-cap 1:2.32-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libpam-cap-1-2.32-1ubuntu0.2.md) | Feb 19, 2025 |
| Linux | libpam-cap Ubuntu 22.04.1 LTS (jammy) | 1:2.44-1ubuntu0.22.04.2 | [libpam-cap 1:2.44-1ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libpam-cap-1-2.44-1ubuntu0.22.04.2.md) | Feb 19, 2025 |
| Linux | libpam-cap Ubuntu 24.04.5 LTS (noble) | 1:2.66-5ubuntu2.2 | [libpam-cap 1:2.66-5ubuntu2.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libpam-cap-1-2.66-5ubuntu2.2.md) | Feb 19, 2025 |
| Linux | libpam-cap Ubuntu 24.10 (oracular) | 1:2.66-5ubuntu3.1 | [libpam-cap 1:2.66-5ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libpam-cap-1-2.66-5ubuntu3.1.md) | Feb 20, 2025 |

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