{"id":"UBUNTU-CVE-2024-27354","details":"An issue was discovered in phpseclib 1.x before 1.0.23, 2.x before 2.0.47, and 3.x before 3.0.36. An attacker can construct a malformed certificate containing an extremely large prime to cause a denial of service (CPU consumption for an isPrime primality check). NOTE: this issue was introduced when attempting to fix CVE-2023-27560.","modified":"2026-09-15T20:26:46.214892758Z","published":"2024-03-01T23:15:00Z","related":["USN-7404-1","USN-8769-1"],"upstream":["CVE-2024-27354"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-27354"},{"type":"REPORT","url":"https://github.com/phpseclib/phpseclib/commit/ad5dbdf2129f5e0fb644637770b7f33de8ca8575"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2024-27354"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7404-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8769-1"}],"affected":[{"package":{"name":"php-phpseclib","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/php-phpseclib?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.1-1ubuntu0.1~esm2"}]}],"versions":["2.0.1-1","2.0.1-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.0.1-1ubuntu0.1~esm2","binary_name":"php-phpseclib"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-27354.json"}},{"package":{"name":"phpseclib","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/phpseclib?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.1-3ubuntu0.1+esm1"}]}],"versions":["0.3.10-3","1.0.0-2","1.0.0-3","1.0.1-1","1.0.1-3","1.0.1-3ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"php-seclib","binary_version":"1.0.1-3ubuntu0.1+esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-27354.json"}},{"package":{"name":"php-phpseclib","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/php-phpseclib?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.9-1ubuntu0.1~esm2"}]}],"versions":["2.0.6-1","2.0.7-1","2.0.9-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"2.0.9-1ubuntu0.1~esm2","binary_name":"php-phpseclib"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-27354.json"}},{"package":{"name":"phpseclib","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/phpseclib?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.9-1ubuntu0.1~esm1"}]}],"versions":["1.0.7-1","1.0.8-1","1.0.9-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"1.0.9-1ubuntu0.1~esm1","binary_name":"php-seclib"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-27354.json"}},{"package":{"name":"php-phpseclib","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/php-phpseclib?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.23-2ubuntu0.1~esm2"}]}],"versions":["2.0.21-2","2.0.23-2"],"ecosystem_specific":{"binaries":[{"binary_version":"2.0.23-2ubuntu0.1~esm2","binary_name":"php-phpseclib"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-27354.json"}},{"package":{"name":"phpseclib","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/phpseclib?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.18-2ubuntu0.1~esm1"}]}],"versions":["1.0.16-2","1.0.18-2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"php-seclib","binary_version":"1.0.18-2ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-27354.json"}},{"package":{"name":"php-phpseclib","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/php-phpseclib?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.36-1ubuntu0.1~esm2"}]}],"versions":["2.0.30-2ubuntu1","2.0.34-1","2.0.35-1","2.0.36-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"2.0.36-1ubuntu0.1~esm2","binary_name":"php-phpseclib"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-27354.json"}},{"package":{"name":"php-phpseclib3","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/php-phpseclib3?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.13-1ubuntu0.1~esm1"}]}],"versions":["3.0.9-1","3.0.10-1","3.0.12-2","3.0.13-1"],"ecosystem_specific":{"binaries":[{"binary_name":"php-phpseclib3","binary_version":"3.0.13-1ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-27354.json"}},{"package":{"name":"phpseclib","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/phpseclib?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.20-1ubuntu0.1~esm1"}]}],"versions":["1.0.19-3ubuntu2","1.0.19-3ubuntu3","1.0.20-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"1.0.20-1ubuntu0.1~esm1","binary_name":"php-seclib"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-27354.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}