{"id":"UBUNTU-CVE-2024-27355","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. When processing the ASN.1 object identifier of a certificate, a sub identifier may be provided that leads to a denial of service (CPU consumption for decodeOID).","modified":"2026-09-15T20:26:45.493904889Z","published":"2024-03-01T23:15:00Z","related":["USN-7404-1","USN-8769-1"],"upstream":["CVE-2024-27355"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-27355"},{"type":"REPORT","url":"https://github.com/phpseclib/phpseclib/commit/e32531001b4d62c66c3d824ccef54ffad835eb59"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2024-27355"},{"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: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_name":"php-phpseclib","binary_version":"2.0.23-2ubuntu0.1~esm2"}],"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-2024-27355.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-2024-27355.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":{"binaries":[{"binary_name":"php-phpseclib","binary_version":"2.0.36-1ubuntu0.1~esm2"}],"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-2024-27355.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-2024-27355.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":{"binaries":[{"binary_version":"1.0.20-1ubuntu0.1~esm1","binary_name":"php-seclib"}],"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-2024-27355.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"}]}