{"id":"CVE-2020-8620","state":"PUBLISHED","title":"In BIND 9.15.6 -> 9.16.5, 9.17.0 -> 9.17.3, An attacker who can establish a TCP connection with the server and send data on that connection can exploit this to trigger the assertio","description":"In BIND 9.15.6 -> 9.16.5, 9.17.0 -> 9.17.3, An attacker who can establish a TCP connection with the server and send data on that connection can exploit this to trigger the assertion failure, causing the server to exit.","publishedAt":"2020-08-21T20:50:18.547Z","updatedAt":"2024-09-17T01:40:34.573Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"isc"},"assigner":"isc","products":["ISC BIND9"],"affected":[{"vendor":"ISC","product":"BIND9","versions":[{"version":"9.15.6","status":"affected","lessThan":"*","changes":[{"at":"9.16.6","status":"unaffected"},{"at":"9.17.0","status":"affected"},{"at":"9.17.4","status":"unaffected"}],"versionType":"custom"}]}],"references":["https://kb.isc.org/docs/cve-2020-8620","https://security.netapp.com/advisory/ntap-20200827-0003/","https://usn.ubuntu.com/4468-1/","https://security.gentoo.org/glsa/202008-19","https://www.synology.com/security/advisory/Synology_SA_20_19","http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html","http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html"],"weaknesses":[],"ingestedAt":"2026-10-29T19:47:44.297Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/8xxx/CVE-2020-8620.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2020-8620","state":"PUBLISHED","datePublished":"2020-08-21T20:50:18.547Z","dateUpdated":"2024-09-17T01:40:34.573Z","assignerShortName":"isc","assignerOrgId":"404fd4d2-a609-4245-b543-2c944a302a22","dateReserved":"2020-02-05T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"In BIND 9.15.6 -> 9.16.5, 9.17.0 -> 9.17.3, An attacker who can establish a TCP connection with the server and send data on that connection can exploit this to trigger the assertion failure, causing the server to exit."}],"affected":[{"vendor":"ISC","product":"BIND9","versions":[{"version":"9.15.6","status":"affected","lessThan":"*","changes":[{"at":"9.16.6","status":"unaffected"},{"at":"9.17.0","status":"affected"},{"at":"9.17.4","status":"unaffected"}],"versionType":"custom"}]}],"references":[{"url":"https://kb.isc.org/docs/cve-2020-8620","tags":["x_refsource_CONFIRM"]},{"url":"https://security.netapp.com/advisory/ntap-20200827-0003/","tags":["x_refsource_CONFIRM"]},{"url":"https://usn.ubuntu.com/4468-1/","name":"USN-4468-1","tags":["vendor-advisory","x_refsource_UBUNTU"]},{"url":"https://security.gentoo.org/glsa/202008-19","name":"GLSA-202008-19","tags":["vendor-advisory","x_refsource_GENTOO"]},{"url":"https://www.synology.com/security/advisory/Synology_SA_20_19","tags":["x_refsource_CONFIRM"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html","name":"openSUSE-SU-2020:1699","tags":["vendor-advisory","x_refsource_SUSE"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html","name":"openSUSE-SU-2020:1701","tags":["vendor-advisory","x_refsource_SUSE"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"description":"In versions of BIND that use the libuv network manager (9.16.x is the only stable branch affected) an incorrectly specified maximum buffer size allows a specially crafted large TCP payload to trigger an assertion failure when it is received.  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