CVE-2022-3736

High

Description

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.

SeverityHigh

CVSS7.5

Exploit probability—

ProductIsc Bind

PublishedJan 26, 2023

First seenJan 26, 2023

Weakness typeCWE-20Improper input validation

How to fix

Update

isc bind9.16.37, 9.18.11, 9.19.9 or later

Vendor advisories

kb.isc.org/docs/cve-2022-3736

Affected products

Product	Affected versions	Fixed in
isc bind	9.16.12 ≤ v < 9.16.37, 9.18.0 ≤ v < 9.18.11, 9.19.0 ≤ v < 9.19.9, 9.16.11, 9.16.13, 9.16.14, 9.16.21, 9.16.32, 9.16.36	9.16.37, 9.18.11, 9.19.9

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