CVE-2022-3736

named configured to answer from stale cache may terminate unexpectedly while processing RRSIG queries

State: Published
Severity: 7.5 High
Published: Jan 25, 2023
Updated: Apr 1, 2025
Reserved: Oct 28, 2022

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	isc

Weaknesses

CWE-20 Improper Input Validation

Affected Products

Product	Versions
BIND 9ISC	9.16.12 through 9.16.36Affected 9.18.0 through 9.18.10Affected 9.19.0 through 9.19.8Affected 9.16.12-S1 through 9.16.36-S1Affected

References

CVE-2022-3736vendor-advisory

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