It was discovered that there were three issues in libcap2, a library for managing kernel "capabilities"; that is, partitioning the powerful single "root" privilege into a set of distinct privileges, typically used to limit any damage if a process running as the "root" . - ------------------------------------------------------------------------- Debian LTS Advisory DLA-4092-1
libcap2 would allow unintended capabilities.. ========================================================================== Ubuntu Security Notice USN-7287-1 February 24, 2025 libcap2 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: libcap2 would allow unintended capabilities. Software Description: - libcap2: POSIX 1003.1e capabilities (library) Details: Tianjia Zhang discovered the libcap2 PAM module pam_cap incorrectly handled parsing group names in the configuration file. This could result in certain users being granted capabilities, contrary to expectations. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 24.10 libpam-cap 1:2.66-5ubuntu3.1 Ubuntu 24.04 LTS libpam-cap 1:2.66-5ubuntu2.2 Ubuntu 22.04 LTS libpam-cap 1:2.44-1ubuntu0.22.04.2 Ubuntu 20.04 LTS libpam-cap 1:2.32-1ubuntu0.2 After a standard system update you need to reboot your computer to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-7287-1 CVE-2025-1390 Package Information: https://launchpad.net/ubuntu/+source/libcap2/1:2.66-5ubuntu3.1 https://launchpad.net/ubuntu/+source/libcap2/1:2.66-5ubuntu2.2 https://launchpad.net/ubuntu/+source/libcap2/1:2.44-1ubuntu0.22.04.2 https://launchpad.net/ubuntu/+source/libcap2/1:2.32-1ubuntu0.2 . Ubuntu Security Bulletin USN-7288-2 highlights a vulnerability in libcap2 that may grant excessive permissions. Immediate patching necessary.. libcap2 security, Ubuntu update, PAM module issue, capabilities management, security advisory. . Severity: Medium. LinuxSecurity.com Team
libcap could be made to crash or possibly execute arbitrary code if it received a specially crafted input.. =========================================================================Ubuntu Security Notice USN-6166-2 June 19, 2023 libcap2 vulnerability ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 18.04 LTS (Available with Ubuntu Pro) - Ubuntu 16.04 LTS (Available with Ubuntu Pro) - Ubuntu 14.04 LTS (Available with Ubuntu Pro) Summary: libcap could be made to crash or possibly execute arbitrary code if it received a specially crafted input. Software Description: - libcap2: POSIX 1003.1e capabilities (library) Details: USN-6166-1 fixed a vulnerability in libcap2. This update provides the corresponding update for Ubuntu 14.04 ESM, Ubuntu 16.04 ESM and Ubuntu 18.04 ESM. Original advisory details: Richard Weinberger discovered that libcap2 incorrectly handled certain long input strings. An attacker could use this issue to cause libcap2 to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2023-2603) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS (Available with Ubuntu Pro): libcap2 1:2.25-1.2ubuntu0.1~esm1 libcap2-bin 1:2.25-1.2ubuntu0.1~esm1 Ubuntu 16.04 LTS (Available with Ubuntu Pro): libcap2 1:2.24-12ubuntu0.1~esm1 libcap2-bin 1:2.24-12ubuntu0.1~esm1 Ubuntu 14.04 LTS (Available with Ubuntu Pro): libcap2 1:2.24-0ubuntu2+esm1 libcap2-bin 1:2.24-0ubuntu2+esm1 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-6166-2 https://ubuntu.com/security/notices/USN-6166-1 CVE-2023-2603 . Uncover the Ubuntu 6166-2 announcement addressing the libcap2 vulnerabilityimpacting specific LTS releases and its consequences.. libcap2 vulnerability, Ubuntu security update, code execution risk. . Severity: Critical. LinuxSecurity.com Team
Several security issues were fixed in libcap2.. =========================================================================Ubuntu Security Notice USN-6166-1 June 14, 2023 libcap2 vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 23.04 - Ubuntu 22.10 - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Several security issues were fixed in libcap2. Software Description: - libcap2: POSIX 1003.1e capabilities (library) Details: David Gstir discovered that libcap2 incorrectly handled certain return codes. An attacker could possibly use this issue to cause libcap2 to consume memory, leading to a denial of service. (CVE-2023-2602) Richard Weinberger discovered that libcap2 incorrectly handled certain long input strings. An attacker could use this issue to cause libcap2 to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2023-2603) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 23.04: libcap2 1:2.66-3ubuntu2.1 libcap2-bin 1:2.66-3ubuntu2.1 Ubuntu 22.10: libcap2 1:2.44-1ubuntu0.22.10.1 libcap2-bin 1:2.44-1ubuntu0.22.10.1 Ubuntu 22.04 LTS: libcap2 1:2.44-1ubuntu0.22.04.1 libcap2-bin 1:2.44-1ubuntu0.22.04.1 Ubuntu 20.04 LTS: libcap2 1:2.32-1ubuntu0.1 libcap2-bin 1:2.32-1ubuntu0.1 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-6166-1 CVE-2023-2602, CVE-2023-2603 Package Information: https://launchpad.net/ubuntu/+source/libcap2/1:2.66-3ubuntu2.1 https://launchpad.net/ubuntu/+source/libcap2/1:2.44-1ubuntu0.22.10.1 https://launchpad.net/ubuntu/+source/libcap2/1:2.44-1ubuntu0.22.04.1 https://launchpad.net/ubuntu/+source/libcap2/1:2.32-1ubuntu0.1 . Ubuntu has issued a security advisory USN-6166-1 addressing several vulnerabilities in libcap2 affecting numerous versions. Ensure to update promptly.. libcap2 Security Patch, Ubuntu Vulnerability Advisory, Denial of Service Fix, Open Source Security Update. . LinuxSecurity.com Team
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