{"schemaVersion":3,"id":"MGASA-2021-0293","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Updated tor package fixes security vulnerabilities\n\nDon'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).","dates":{"published":"2021-06-28T21:16:35.000Z","modified":"2026-04-16T04:43:17.098Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"mageia","product":"tor","name":"tor","label":"tor","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/tor","purlType":"rpm","versions":[{"text":"< 0.3.5.15-1.1.mga7","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.3.5.15-1.1.mga7","eol":null,"hubHref":null},{"vendor":"mageia","product":"tor","name":"tor","label":"tor","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/tor","purlType":"rpm","versions":[{"text":"< 0.3.5.15-1.1.mga8","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.3.5.15-1.1.mga8","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://advisories.mageia.org/MGASA-2021-0293.html","label":"advisories.mageia.org/MGASA-2021-0293.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=29136","label":"bugs.mageia.org/show_bug.cgi?id=29136","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=29158","label":"bugs.mageia.org/show_bug.cgi?id=29158","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://blog.torproject.org/node/2041","label":"blog.torproject.org/node/2041","hostname":"blog.torproject.org","tags":["WEB"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/RST7YTNTKJURIR2QVIJMEBXWW2YHETRX/","label":"lists.fedoraproject.org/archives/…","hostname":"lists.fedoraproject.org","tags":["WEB"]}],"lineage":{"upstream":["CVE-2021-34548","CVE-2021-34549","CVE-2021-34550"],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2021-06-28T21:16:35.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-16T04:43:17.098Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T08:31:10.633Z","stale":false,"partial":false}}