CVE-2022-3080

bind: BIND 9 resolvers configured to answer from cache with zero stale-answer-timeout may terminate unexpectedly

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Severity

Important

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · September 21, 2022

Updated · November 22, 2025

Description

A flaw was found in the Bind package, where the resolver can crash when stale cache and stale answers are enabled, option stale-answer-client-timeout is set to 0 and there is a stale CNAME in the cache for an incoming query. By sending specific queries to the resolver, an attacker can cause named to crash.

Statement

This issue affects versions 9.16.14 and higher of the Bind package. Therefore Red Hat Enterprise Linux 6 and 7 are not impacted.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-20 · Improper Input Validation