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CVE-2021-25215

Published: 28 April 2021

In BIND 9.0.0 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a query for a record triggering the flaw described above, the named process will terminate due to a failed assertion check. The vulnerability affects all currently maintained BIND 9 branches (9.11, 9.11-S, 9.16, 9.16-S, 9.17) as well as all other versions of BIND 9.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
bind9
Launchpad, Ubuntu, Debian
impish
Released (1:9.16.8-1ubuntu3.1)
jammy
Released (1:9.16.8-1ubuntu3.1)
kinetic
Released (1:9.16.8-1ubuntu3.1)
lunar
Released (1:9.16.8-1ubuntu3.1)
bionic
Released (1:9.11.3+dfsg-1ubuntu1.15)
focal
Released (1:9.16.1-0ubuntu2.8)
groovy
Released (1:9.16.6-3ubuntu1.2)
hirsute
Released (1:9.16.8-1ubuntu3.1)
trusty Needed

upstream
Released (9.11.30,9.16.14,9.17.12)
xenial
Released (1:9.10.3.dfsg.P4-8ubuntu1.19)
mantic
Released (1:9.16.8-1ubuntu3.1)

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