{"schemaVersion":3,"id":"CVE-2021-41396","aliases":["UBUNTU-CVE-2021-41396","DEBIAN-CVE-2021-41396"],"status":"published","duplicateOf":null,"title":null,"description":"Live555 through 1.08 does not handle socket connections properly. A huge number of incoming socket connections in a short time invokes the error-handling module, in which a heap-based buffer overflow happens. An attacker can leverage this to launch a DoS attack.","dates":{"published":"2022-07-11T11:38:05.000Z","modified":"2024-08-04T03:08:32.468Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01374,"percentile":0.71627,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.03899999999999997,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.01335},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01374,"percentile":0.71627}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01335,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01374,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01374,"percentile":0.71627}]},"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":[{"id":"REF_FB02DB169285D092","name":"Exploit Reference (lists.live555.com)","source":"reference","url":"http://lists.live555.com/pipermail/live-devel/2021-September/021994.html","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-787","name":"Out-of-bounds Write","description":"The product writes data past the end, or before the beginning, of the intended buffer.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/787.html"}],"affected":[{"vendor":"debian","product":"liblivemedia","name":"liblivemedia","label":"liblivemedia","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/liblivemedia","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"liblivemedia","name":"liblivemedia","label":"liblivemedia","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/liblivemedia","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"live555","product":"live555","name":"live555","label":"live555","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 1.08","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 1.08","eol":null,"hubHref":"/vendor/live555/live555"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"http://www.live555.com/liveMedia/public/changelog.txt","label":"www.live555.com/liveMedia/public/changelog.txt","hostname":"www.live555.com","tags":["X Refsource MISC","REPORT","Release Notes","Vendor Advisory"]},{"url":"http://lists.live555.com/pipermail/live-devel/2021-September/021994.html","label":"lists.live555.com/pipermail/live-devel/2021-September/021994.html","hostname":"lists.live555.com","tags":["X Refsource MISC","REPORT","Exploit","Mailing List","Vendor Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-41396","label":"ubuntu.com/security/CVE-2021-41396","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-41396","label":"www.cve.org/CVERecord?id=CVE-2021-41396","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-41396","label":"security-tracker.debian.org/tracker/CVE-2021-41396","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2022-07-11T11:38:05.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-04T03:08:32.468Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":40,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T18:18:20.263Z","stale":false,"partial":false}}