========================================================================== Ubuntu Security Notice USN-7404-1 April 02, 2025
phpseclib vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS Summary: Several security issues were fixed in phpseclib. Software Description: - php-phpseclib: implementations of an arbitrary-precision integer arithmetic - php-phpseclib3: implementations of an arbitrary-precision integer arithmetic - phpseclib: implementations of an arbitrary-precision integer arithmetic Details: It was discovered that phpseclib did not correctly handle RSA PKCS#1 v1.5 signature verification. An attacker could possibly use this issue to bypass authentication. This issue only affected Ubuntu 20.04 LTS. (CVE-2021-30130) It was discovered that phpseclib did not correctly handle certain characters in certain TLS fields, which could lead to name confusion. An attacker could possibly use this issue to bypass authentication. (CVE-2023-52892) It was discovered that phpseclib incorrectly limited the size of prime numbers generated by isPrime. An attacker could possibly use this issue to cause a denial of service. (CVE-2024-27354) It was discovered that phpseclib did not correctly handle processing the ASN.1 object identifier of a certificate. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2024-27355) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS php-phpseclib 2.0.36-1ubuntu0.1~esm2 Available with Ubuntu Pro php-phpseclib3 3.0.13-1ubuntu0.1~esm1 Available with Ubuntu Pro php-seclib 1.0.20-1ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 20.04 LTS php-phpseclib 2.0.23-2ubuntu0.1~esm2 Available with Ubuntu Pro php-seclib 1.0.18-2ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 18.04 LTS php-phpseclib 2.0.9-1ubuntu0.1~esm2 Available with Ubuntu Pro php-seclib 1.0.9-1ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 16.04 LTS php-phpseclib 2.0.1-1ubuntu0.1~esm2 Available with Ubuntu Pro php-seclib 1.0.1-3ubuntu0.1+esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-7404-1 CVE-2021-30130, CVE-2023-52892, CVE-2024-27354, CVE-2024-27355
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Description: OpenPGP digital signature
