{"containers":{"cna":{"affected":[{"product":"BIND9","vendor":"ISC","versions":[{"lessThan":"unspecified","status":"affected","version":"9.0.0","versionType":"custom"},{"lessThan":"9.11.22","status":"affected","version":"unspecified","versionType":"custom"},{"lessThan":"unspecified","status":"affected","version":"9.12.0","versionType":"custom"},{"lessThan":"9.16.6","status":"affected","version":"unspecified","versionType":"custom"},{"lessThan":"unspecified","status":"affected","version":"9.17.0","versionType":"custom"},{"lessThan":"9.17.4","status":"affected","version":"unspecified","versionType":"custom"},{"changes":[{"at":"9.11.22-S1","status":"unaffected"}],"lessThan":"Supported Preview*","status":"affected","version":"9.9.3-S1","versionType":"custom"}]}],"credits":[{"lang":"en","value":"ISC would like to thank Dave Feldman, Jeff Warren, and Joel Cunningham of Oracle for bringing this vulnerability to our attention."}],"datePublic":"2020-08-20T00:00:00.000Z","descriptions":[{"lang":"en","value":"In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit."}],"exploits":[{"lang":"en","value":"We are not aware of any active exploits"}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"description":"Attempting to verify a truncated response to a TSIG-signed request leads to an assertion failure.  Affects BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2021-10-20T10:40:22.000Z","orgId":"404fd4d2-a609-4245-b543-2c944a302a22","shortName":"isc"},"references":[{"tags":["x_refsource_CONFIRM"],"url":"https://kb.isc.org/docs/cve-2020-8622"},{"name":"FEDORA-2020-a02b7a0f21","tags":["vendor-advisory","x_refsource_FEDORA"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DQN62GBMCIC5AY4KYADGXNKVY6AJKSJE/"},{"name":"USN-4468-1","tags":["vendor-advisory","x_refsource_UBUNTU"],"url":"https://usn.ubuntu.com/4468-1/"},{"name":"USN-4468-2","tags":["vendor-advisory","x_refsource_UBUNTU"],"url":"https://usn.ubuntu.com/4468-2/"},{"name":"DSA-4752","tags":["vendor-advisory","x_refsource_DEBIAN"],"url":"https://www.debian.org/security/2020/dsa-4752"},{"name":"FEDORA-2020-14c194e5af","tags":["vendor-advisory","x_refsource_FEDORA"],"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKAMJZXR66P6S5LEU4SN7USSNCWTXEXP/"},{"name":"[debian-lts-announce] 20200829 [SECURITY] [DLA 2355-1] bind9 security update","tags":["mailing-list","x_refsource_MLIST"],"url":"https://lists.debian.org/debian-lts-announce/2020/08/msg00053.html"},{"name":"GLSA-202008-19","tags":["vendor-advisory","x_refsource_GENTOO"],"url":"https://security.gentoo.org/glsa/202008-19"},{"name":"openSUSE-SU-2020:1699","tags":["vendor-advisory","x_refsource_SUSE"],"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html"},{"name":"openSUSE-SU-2020:1701","tags":["vendor-advisory","x_refsource_SUSE"],"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html"},{"tags":["x_refsource_MISC"],"url":"https://www.oracle.com/security-alerts/cpuoct2021.html"},{"tags":["x_refsource_CONFIRM"],"url":"https://security.netapp.com/advisory/ntap-20200827-0003/"},{"tags":["x_refsource_CONFIRM"],"url":"https://www.synology.com/security/advisory/Synology_SA_20_19"}],"solutions":[{"lang":"en","value":"Upgrade to the patched release most closely related to your current version of BIND:\n\n    BIND 9.11.22\n    BIND 9.16.6\n    BIND 9.17.4\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n    BIND 9.11.22-S1"}],"source":{"discovery":"USER"},"title":"A truncated TSIG response can lead to an assertion failure","workarounds":[{"lang":"en","value":"No workarounds known."}],"x_generator":{"engine":"Vulnogram 0.0.9"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security-officer@isc.org","DATE_PUBLIC":"2020-08-20T18:35:08.000Z","ID":"CVE-2020-8622","STATE":"PUBLIC","TITLE":"A truncated TSIG response can lead to an assertion failure"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"BIND9","version":{"version_data":[{"version_affected":">=","version_value":"9.0.0"},{"version_affected":"<","version_value":"9.11.22"},{"version_affected":">=","version_value":"9.12.0"},{"version_affected":"<","version_value":"9.16.6"},{"version_affected":">=","version_value":"9.17.0"},{"version_affected":"<","version_value":"9.17.4"},{"version_affected":">=","version_name":"Supported Preview","version_value":"9.9.3-S1"},{"version_affected":"<","version_name":"Supported Preview","version_value":"9.11.22-S1"}]}}]},"vendor_name":"ISC"}]}},"credit":[{"lang":"eng","value":"ISC would like to thank Dave Feldman, Jeff Warren, and Joel Cunningham of Oracle for bringing this vulnerability to our attention."}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. 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