{ "containers": { "cna": { "affected": [ { "product": "BIND9", "vendor": "ISC", "versions": [ { "changes": [ { "at": "9.16.6", "status": "unaffected" }, { "at": "9.17.0", "status": "affected" }, { "at": "9.17.4", "status": "unaffected" } ], "lessThan": "*", "status": "affected", "version": "9.15.6", "versionType": "custom" } ] } ], "credits": [ { "lang": "en", "value": "ISC would like to thank Emanuel Almeida of Cisco Systems, Inc. for bringing this vulnerability to our attention." } ], "datePublic": "2020-08-20T00:00:00", "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." } ], "exploits": [ { "lang": "en", "value": "We are not aware of any active exploits." } ], "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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