{"id":"UBUNTU-CVE-2023-52892","details":"In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification.","modified":"2026-02-04T06:00:37.057420Z","published":"2024-06-27T22:15:00Z","related":["USN-7404-1"],"upstream":["CVE-2023-52892"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-52892"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-52892"},{"type":"REPORT","url":"https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627"},{"type":"REPORT","url":"https://github.com/phpseclib/phpseclib/issues/1943"},{"type":"REPORT","url":"https://github.com/phpseclib/phpseclib/releases/tag/3.0.33"},{"type":"REPORT","url":"https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627"},{"type":"REPORT","url":"https://github.com/x509-name-testing/name_testing_artifacts"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7404-1"}],"affected":[{"package":{"name":"php-phpseclib","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/php-phpseclib@2.0.1-1ubuntu0.1~esm2?arch=source&distro=esm-apps/xenial"},"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_name":"php-phpseclib","binary_version":"2.0.1-1ubuntu0.1~esm2"}],"availability":"Available 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https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-52892.json"}},{"package":{"name":"php-phpseclib","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/php-phpseclib@2.0.9-1ubuntu0.1~esm2?arch=source&distro=esm-apps/bionic"},"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":{"binaries":[{"binary_name":"php-phpseclib","binary_version":"2.0.9-1ubuntu0.1~esm2"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-52892.json"}},{"package":{"name":"phpseclib","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/phpseclib@1.0.9-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic"},"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":{"binaries":[{"binary_name":"php-seclib","binary_version":"1.0.9-1ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-52892.json"}},{"package":{"name":"php-phpseclib","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/php-phpseclib@2.0.23-2ubuntu0.1~esm2?arch=source&distro=esm-apps/focal"},"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/2023/UBUNTU-CVE-2023-52892.json"}},{"package":{"name":"phpseclib","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/phpseclib@1.0.18-2ubuntu0.1~esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.18-2ubuntu0.1~esm1"}]}],"versions":["1.0.16-2","1.0.18-2"],"ecosystem_specific":{"binaries":[{"binary_name":"php-seclib","binary_version":"1.0.18-2ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-52892.json"}},{"package":{"name":"php-phpseclib","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/php-phpseclib@2.0.36-1ubuntu0.1~esm2?arch=source&distro=esm-apps/jammy"},"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/2023/UBUNTU-CVE-2023-52892.json"}},{"package":{"name":"php-phpseclib3","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/php-phpseclib3@3.0.13-1ubuntu0.1~esm1?arch=source&distro=esm-apps/jammy"},"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/2023/UBUNTU-CVE-2023-52892.json"}},{"package":{"name":"phpseclib","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/phpseclib@1.0.20-1ubuntu0.1~esm1?arch=source&distro=esm-apps/jammy"},"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_name":"php-seclib","binary_version":"1.0.20-1ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-52892.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}