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CVE-2022-3736

Published: 25 January 2023

BIND 9 resolver can crash when stale cache and stale answers are enabled, option `stale-answer-client-timeout` is set to a positive integer, and the resolver receives an RRSIG query. This issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1.

Notes

AuthorNote
alexmurray
As of isc-dhcp-4.4.3-1, isc-dhcp vendors bind9 libs
mdeslaur
This issue was introduced in 9.16.12

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
bind9
Launchpad, Ubuntu, Debian
trusty Not vulnerable

lunar
Released (1:9.18.11-2ubuntu1)
bionic Not vulnerable
(1:9.11.3+dfsg-1ubuntu1.18)
focal Not vulnerable
(1:9.16.1-0ubuntu2.11)
jammy
Released (1:9.18.1-1ubuntu1.3)
kinetic
Released (1:9.18.4-2ubuntu2.1)
upstream
Released (9.16.37,9.18.11,9.19.9)
xenial Not vulnerable

isc-dhcp
Launchpad, Ubuntu, Debian
kinetic Not vulnerable
(code not present)
lunar Not vulnerable
(code not present)
bionic Not vulnerable
(code not present)
focal Not vulnerable
(code not present)
jammy 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