{"id":"MGASA-2021-0293","summary":"Updated tor package fixes security vulnerabilities","details":"Don't allow relays to spoof RELAY_END or RELAY_RESOLVED cell on half-closed\nstreams. Previously, clients failed to validate which hop sent these cells:\nthis would allow a relay on a circuit to end a stream that wasn't actually\nbuilt with it (CVE-2021-34548).\n\nhashtable-based CPU denial-of-service attack against relays (CVE-2021-34549). \n\nout-of-bounds memory access in v3 onion service descriptor parsing\n(CVE-2021-34550).\n\nSee also upstream release notes for included other bugfixes.\n\nThis package also fixes an error in tor package's un-install script (mga#29158).\n","modified":"2026-04-16T00:11:35.419621760Z","published":"2021-06-28T21:16:35Z","upstream":["CVE-2021-34548","CVE-2021-34549","CVE-2021-34550"],"references":[{"type":"ADVISORY","url":"https://advisories.mageia.org/MGASA-2021-0293.html"},{"type":"REPORT","url":"https://bugs.mageia.org/show_bug.cgi?id=29136"},{"type":"REPORT","url":"https://bugs.mageia.org/show_bug.cgi?id=29158"},{"type":"WEB","url":"https://blog.torproject.org/node/2041"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/RST7YTNTKJURIR2QVIJMEBXWW2YHETRX/"}],"affected":[{"package":{"name":"tor","ecosystem":"Mageia:7","purl":"pkg:rpm/mageia/tor?arch=source&distro=mageia-7"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.3.5.15-1.1.mga7"}]}],"ecosystem_specific":{"section":"core"},"database_specific":{"source":"https://advisories.mageia.org/MGASA-2021-0293.json"}},{"package":{"name":"tor","ecosystem":"Mageia:8","purl":"pkg:rpm/mageia/tor?arch=source&distro=mageia-8"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.3.5.15-1.1.mga8"}]}],"ecosystem_specific":{"section":"core"},"database_specific":{"source":"https://advisories.mageia.org/MGASA-2021-0293.json"}}],"schema_version":"1.7.5","credits":[{"name":"Mageia","contact":["https://wiki.mageia.org/en/Packages_Security_Team"],"type":"COORDINATOR"}]}