{"id":"MGASA-2020-0277","summary":"Updated tomcat packages fix security vulnerability","details":"Updated tomcat packages fix security vulnerability:\n\nWhen using Apache Tomcat versions 9.0.0.M1 to 9.0.34, if a) an attacker\nis able to control the contents and name of a file on the server; and\nb) the server is configured to use the PersistenceManager with a\nFileStore; and c) the PersistenceManager is configured with\nsessionAttributeValueClassNameFilter=\"null\" (the default unless a\nSecurityManager is used) or a sufficiently lax filter to allow the\nattacker provided object to be deserialized; and d) the attacker knows\nthe relative file path from the storage location used by FileStore to the\nfile the attacker has control over; then, using a specifically crafted\nrequest, the attacker will be able to trigger remote code execution via\ndeserialization of the file under their control. Note that all of\nconditions a) to d) must be true for the attack to succeed (CVE-2020-9484).\n","modified":"2026-04-16T00:10:45.433755260Z","published":"2020-07-05T11:26:44Z","upstream":["CVE-2020-9484"],"references":[{"type":"ADVISORY","url":"https://advisories.mageia.org/MGASA-2020-0277.html"},{"type":"REPORT","url":"https://bugs.mageia.org/show_bug.cgi?id=26657"},{"type":"WEB","url":"http://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.35"}],"affected":[{"package":{"name":"tomcat","ecosystem":"Mageia:7","purl":"pkg:rpm/mageia/tomcat?arch=source&distro=mageia-7"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.35-1.mga7"}]}],"ecosystem_specific":{"section":"core"},"database_specific":{"source":"https://advisories.mageia.org/MGASA-2020-0277.json"}}],"schema_version":"1.7.5","credits":[{"name":"Mageia","contact":["https://wiki.mageia.org/en/Packages_Security_Team"],"type":"COORDINATOR"}]}