{"id":"GHSA-344f-f5vg-2jfj","summary":"Potential remote code execution in Apache Tomcat","details":"When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter=\"null\" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.","aliases":["BIT-tomcat-2020-9484","CVE-2020-9484"],"modified":"2026-08-25T18:45:22.230420338Z","published":"2020-05-21T18:52:29Z","database_specific":{"github_reviewed_at":"2020-05-21T17:21:20Z","nvd_published_at":"2020-05-20T19:15:00Z","cwe_ids":["CWE-502"],"severity":"HIGH","github_reviewed":true},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-9484"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/3aa8f28db7efb311cdd1b6fe15a9cd3b167a2222.patch"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/4785433a226a20df6acbea49296e1ce7e23de453"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/6d66e99ef85da93e4d2c2a536ca51aa3418bfaf4"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/74b105657ffbd1d1de80455f03446c3bbf30d1f5"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/93f0cc403a9210d469afc2bd9cf03ab3251c6f35"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/bb33048e3f9b4f2b70e4da2e6c4e34ca89023b1b"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpuoct2021.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WJ7XHKWJWDNWXUJH6UB7CLIW4TWOZ26N"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GIQHXENTLYUNOES4LXVNJ2NCUQQRF5VJ"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJ7XHKWJWDNWXUJH6UB7CLIW4TWOZ26N"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GIQHXENTLYUNOES4LXVNJ2NCUQQRF5VJ"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2020/07/msg00010.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2020/05/msg00020.html"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf@%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf@%3Cdev.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf@%3Cannounce.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf@%3Cannounce.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf%40%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf%40%3Cdev.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf%40%3Cannounce.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf%40%3Cannounce.apache.org%3E"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpuoct2020.html"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpujul2022.html"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpujul2020.html"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpujan2022.html"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpujan2021.html"},{"type":"WEB","url":"https://www.oracle.com/security-alerts/cpuApr2021.html"},{"type":"WEB","url":"https://www.oracle.com//security-alerts/cpujul2021.html"},{"type":"WEB","url":"https://www.debian.org/security/2020/dsa-4727"},{"type":"WEB","url":"https://usn.ubuntu.com/4596-1"},{"type":"WEB","url":"https://usn.ubuntu.com/4448-1"},{"type":"WEB","url":"https://tomcat.apache.org/security-9.html"},{"type":"WEB","url":"https://tomcat.apache.org/security-8.html"},{"type":"WEB","url":"https://tomcat.apache.org/security-7.html"},{"type":"WEB","url":"https://tomcat.apache.org/security-10.html"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20200528-0005"},{"type":"WEB","url":"https://security.gentoo.org/glsa/202006-21"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r8dd19c514face6dd85fd4eab0271854883f40c7307926c1f7cd5400c@%3Ccommits.tomee.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r8dd19c514face6dd85fd4eab0271854883f40c7307926c1f7cd5400c%40%3Ccommits.tomee.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r8a2ac0e476dbfc1e6440b09dcc782d444ad635d6da26f0284725a5dc@%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r8a2ac0e476dbfc1e6440b09dcc782d444ad635d6da26f0284725a5dc%40%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r7bc247fffcb1d58415215c861d2354bd653c86266230d78a93c71ae2@%3Cdev.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r7bc247fffcb1d58415215c861d2354bd653c86266230d78a93c71ae2%40%3Cdev.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r77eae567ed829da9012cadb29af17f2df8fa23bf66faf88229857bb1%40%3Cannounce.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r26950738f4b4ca2d256597cf391d52d3450fa665c297ea5ca38f5469@%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r26950738f4b4ca2d256597cf391d52d3450fa665c297ea5ca38f5469%40%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r123b3ebe389f46f9d337923f393cdae4d3e9b78d982d706712f0898c@%3Ccommits.tomee.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r123b3ebe389f46f9d337923f393cdae4d3e9b78d982d706712f0898c%40%3Ccommits.tomee.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r11ce01e8a4c7269b88f88212f21830edf73558997ac7744f37769b77@%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r11ce01e8a4c7269b88f88212f21830edf73558997ac7744f37769b77%40%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://kc.mcafee.com/corporate/index?page=content&id=SB10332"},{"type":"PACKAGE","url":"https://github.com/apache/tomcat"},{"type":"WEB","url":"https://bugzilla.suse.com/show_bug.cgi?id=1171928"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rf70f53af27e04869bdac18b1fc14a3ee529e59eb12292c8791a77926@%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rf70f53af27e04869bdac18b1fc14a3ee529e59eb12292c8791a77926%40%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rf6d5d57b114678d8898005faef31e9fd6d7c981fcc4ccfc3bc272fc9@%3Cdev.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rf6d5d57b114678d8898005faef31e9fd6d7c981fcc4ccfc3bc272fc9%40%3Cdev.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rf59c72572b9fee674a5d5cc6afeca4ffc3918a02c354a81cc50b7119@%3Ccommits.tomee.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rf59c72572b9fee674a5d5cc6afeca4ffc3918a02c354a81cc50b7119%40%3Ccommits.tomee.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rc8473b08abdf3c16494ed817bec1717a0ee0c8080315bc27db5f21c3@%3Ccommits.tomee.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rc8473b08abdf3c16494ed817bec1717a0ee0c8080315bc27db5f21c3%40%3Ccommits.tomee.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rc1778b38e74b5b6142414d57623bd55b023a72361f422836782fca3c@%3Cdev.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rc1778b38e74b5b6142414d57623bd55b023a72361f422836782fca3c%40%3Cdev.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rb51ccd58b2152fc75125b2406fc93e04ca9d34e737263faa6ff0f41f@%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rb51ccd58b2152fc75125b2406fc93e04ca9d34e737263faa6ff0f41f%40%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rb1c0fb105ce2b93b7ec6fc1b77dd208022621a91c12d1f580813cfed@%3Cdev.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rb1c0fb105ce2b93b7ec6fc1b77dd208022621a91c12d1f580813cfed%40%3Cdev.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/raa4123e472175bb052fbba165d37187cea923f755e8f3f30d124cb3f@%3Ccommits.tomee.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/raa4123e472175bb052fbba165d37187cea923f755e8f3f30d124cb3f%40%3Ccommits.tomee.apache.org%3E"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00057.html"},{"type":"WEB","url":"http://packetstormsecurity.com/files/157924/Apache-Tomcat-CVE-2020-9484-Proof-Of-Concept.html"},{"type":"WEB","url":"http://seclists.org/fulldisclosure/2020/Jun/6"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2021/03/01/2"}],"affected":[{"package":{"name":"org.apache.tomcat:tomcat-catalina","ecosystem":"Maven","purl":"pkg:maven/org.apache.tomcat/tomcat-catalina"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.0.0-M1"},{"fixed":"10.0.0-M5"}]}],"versions":["10.0.0-M1","10.0.0-M3","10.0.0-M4"],"database_specific":{"last_known_affected_version_range":"\u003c= 10.0.0-M4","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/05/GHSA-344f-f5vg-2jfj/GHSA-344f-f5vg-2jfj.json"}},{"package":{"name":"org.apache.tomcat:tomcat-catalina","ecosystem":"Maven","purl":"pkg:maven/org.apache.tomcat/tomcat-catalina"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.0.0"},{"fixed":"9.0.35"}]}],"versions":["9.0.1","9.0.10","9.0.11","9.0.12","9.0.13","9.0.14","9.0.16","9.0.17","9.0.19","9.0.2","9.0.20","9.0.21","9.0.22","9.0.24","9.0.26","9.0.27","9.0.29","9.0.30","9.0.31","9.0.33","9.0.34","9.0.4","9.0.5","9.0.6","9.0.7","9.0.8"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/05/GHSA-344f-f5vg-2jfj/GHSA-344f-f5vg-2jfj.json"}},{"package":{"name":"org.apache.tomcat:tomcat-catalina","ecosystem":"Maven","purl":"pkg:maven/org.apache.tomcat/tomcat-catalina"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.0.0"},{"fixed":"8.5.55"}]}],"versions":["8.0.1","8.0.11","8.0.12","8.0.14","8.0.15","8.0.17","8.0.18","8.0.20","8.0.21","8.0.22","8.0.23","8.0.24","8.0.26","8.0.27","8.0.28","8.0.29","8.0.3","8.0.30","8.0.32","8.0.33","8.0.35","8.0.36","8.0.37","8.0.38","8.0.39","8.0.41","8.0.42","8.0.43","8.0.44","8.0.45","8.0.46","8.0.47","8.0.48","8.0.49","8.0.5","8.0.50","8.0.51","8.0.52","8.0.53","8.0.8","8.0.9","8.5.0","8.5.11","8.5.12","8.5.13","8.5.14","8.5.15","8.5.16","8.5.19","8.5.2","8.5.20","8.5.21","8.5.23","8.5.24","8.5.27","8.5.28","8.5.29","8.5.3","8.5.30","8.5.31","8.5.32","8.5.33","8.5.34","8.5.35","8.5.37","8.5.38","8.5.39","8.5.4","8.5.40","8.5.41","8.5.42","8.5.43","8.5.45","8.5.46","8.5.47","8.5.49","8.5.5","8.5.50","8.5.51","8.5.53","8.5.54","8.5.6","8.5.8","8.5.9"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/05/GHSA-344f-f5vg-2jfj/GHSA-344f-f5vg-2jfj.json"}},{"package":{"name":"org.apache.tomcat:tomcat-catalina","ecosystem":"Maven","purl":"pkg:maven/org.apache.tomcat/tomcat-catalina"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.0.0"},{"fixed":"7.0.104"}]}],"versions":["7.0.0","7.0.100","7.0.103","7.0.11","7.0.12","7.0.14","7.0.16","7.0.19","7.0.2","7.0.20","7.0.21","7.0.22","7.0.23","7.0.25","7.0.26","7.0.27","7.0.28","7.0.29","7.0.30","7.0.32","7.0.33","7.0.34","7.0.35","7.0.37","7.0.39","7.0.4","7.0.40","7.0.41","7.0.42","7.0.47","7.0.5","7.0.50","7.0.52","7.0.53","7.0.54","7.0.55","7.0.56","7.0.57","7.0.59","7.0.6","7.0.61","7.0.62","7.0.63","7.0.64","7.0.65","7.0.67","7.0.68","7.0.69","7.0.70","7.0.72","7.0.73","7.0.75","7.0.76","7.0.77","7.0.78","7.0.79","7.0.8","7.0.81","7.0.82","7.0.84","7.0.85","7.0.86","7.0.88","7.0.90","7.0.91","7.0.92","7.0.93","7.0.94","7.0.96","7.0.99"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/05/GHSA-344f-f5vg-2jfj/GHSA-344f-f5vg-2jfj.json"}},{"package":{"name":"org.apache.tomcat.embed:tomcat-embed-core","ecosystem":"Maven","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.0.0-M1"},{"fixed":"10.0.0-M5"}]}],"versions":["10.0.0-M1","10.0.0-M3","10.0.0-M4"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/05/GHSA-344f-f5vg-2jfj/GHSA-344f-f5vg-2jfj.json","last_known_affected_version_range":"\u003c= 10.0.0-M4"}},{"package":{"name":"org.apache.tomcat.embed:tomcat-embed-core","ecosystem":"Maven","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.0.0"},{"fixed":"9.0.35"}]}],"versions":["9.0.1","9.0.10","9.0.11","9.0.12","9.0.13","9.0.14","9.0.16","9.0.17","9.0.19","9.0.2","9.0.20","9.0.21","9.0.22","9.0.24","9.0.26","9.0.27","9.0.29","9.0.30","9.0.31","9.0.33","9.0.34","9.0.4","9.0.5","9.0.6","9.0.7","9.0.8"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/05/GHSA-344f-f5vg-2jfj/GHSA-344f-f5vg-2jfj.json"}},{"package":{"name":"org.apache.tomcat.embed:tomcat-embed-core","ecosystem":"Maven","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.0.0"},{"fixed":"8.5.55"}]}],"versions":["8.0.1","8.0.11","8.0.12","8.0.14","8.0.15","8.0.17","8.0.18","8.0.20","8.0.21","8.0.22","8.0.23","8.0.24","8.0.26","8.0.27","8.0.28","8.0.29","8.0.3","8.0.30","8.0.32","8.0.33","8.0.35","8.0.36","8.0.37","8.0.38","8.0.39","8.0.41","8.0.42","8.0.43","8.0.44","8.0.45","8.0.46","8.0.47","8.0.48","8.0.49","8.0.5","8.0.50","8.0.51","8.0.52","8.0.53","8.0.8","8.0.9","8.5.0","8.5.11","8.5.12","8.5.13","8.5.14","8.5.15","8.5.16","8.5.19","8.5.2","8.5.20","8.5.21","8.5.23","8.5.24","8.5.27","8.5.28","8.5.29","8.5.3","8.5.30","8.5.31","8.5.32","8.5.33","8.5.34","8.5.35","8.5.37","8.5.38","8.5.39","8.5.4","8.5.40","8.5.41","8.5.42","8.5.43","8.5.45","8.5.46","8.5.47","8.5.49","8.5.5","8.5.50","8.5.51","8.5.53","8.5.54","8.5.6","8.5.8","8.5.9"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/05/GHSA-344f-f5vg-2jfj/GHSA-344f-f5vg-2jfj.json"}},{"package":{"name":"org.apache.tomcat.embed:tomcat-embed-core","ecosystem":"Maven","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"7.0.0"},{"fixed":"7.0.104"}]}],"versions":["7.0.0","7.0.100","7.0.103","7.0.11","7.0.12","7.0.14","7.0.16","7.0.19","7.0.2","7.0.20","7.0.21","7.0.22","7.0.23","7.0.25","7.0.26","7.0.27","7.0.28","7.0.29","7.0.30","7.0.32","7.0.33","7.0.34","7.0.35","7.0.37","7.0.39","7.0.4","7.0.40","7.0.41","7.0.42","7.0.47","7.0.5","7.0.50","7.0.52","7.0.53","7.0.54","7.0.55","7.0.56","7.0.57","7.0.59","7.0.6","7.0.61","7.0.62","7.0.63","7.0.64","7.0.65","7.0.67","7.0.68","7.0.69","7.0.70","7.0.72","7.0.73","7.0.75","7.0.76","7.0.77","7.0.78","7.0.79","7.0.8","7.0.81","7.0.82","7.0.84","7.0.85","7.0.86","7.0.88","7.0.90","7.0.91","7.0.92","7.0.93","7.0.94","7.0.96","7.0.99"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2020/05/GHSA-344f-f5vg-2jfj/GHSA-344f-f5vg-2jfj.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}