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CVE-2021-25220

Published: 16 March 2022

BIND 9.11.0 -> 9.11.36 9.12.0 -> 9.16.26 9.17.0 -> 9.18.0 BIND Supported Preview Editions: 9.11.4-S1 -> 9.11.36-S1 9.16.8-S1 -> 9.16.26-S1 Versions of BIND 9 earlier than those shown - back to 9.1.0, including Supported Preview Editions - are also believed to be affected but have not been tested as they are EOL. The cache could become poisoned with incorrect records leading to queries being made to the wrong servers, which might also result in false information being returned to clients.

Priority

Medium

Cvss 3 Severity Score

6.8

Score breakdown

Status

Package Release Status
bind9
Launchpad, Ubuntu, Debian
upstream
Released (9.18.1)
bionic
Released (1:9.11.3+dfsg-1ubuntu1.17)
focal
Released (1:9.16.1-0ubuntu2.10)
impish
Released (1:9.16.15-1ubuntu1.2)
jammy
Released (1:9.18.0-2ubuntu3)

Severity score breakdown

Parameter Value
Base score 6.8
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Scope Changed
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N