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CVE-2020-8621

Published: 20 August 2020

In BIND 9.14.0 -> 9.16.5, 9.17.0 -> 9.17.3, If a server is configured with both QNAME minimization and 'forward first' then an attacker who can send queries to it may be able to trigger the condition that will cause the server to crash. Servers that 'forward only' are not affected.

Notes

AuthorNote
alexmurray 
Affects versions 9.14.0 -> 9.16.5, 9.17.0 -> 9.17.3

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
bind9
Launchpad, Ubuntu, Debian 		bionic Not vulnerable
(code not present)
focal
Released (1:9.16.1-0ubuntu2.3)
precise Not vulnerable
(code not present)
trusty Not vulnerable
(code not present)
upstream Needs triage

xenial Not vulnerable
(code not present)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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