CVE-2022-3080

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

Published Sep 21, 2022 CVSS 3.1 · 7.5 High EPSS 2.0% KEV · Not listed
Description
By sending specific queries to the resolver, an attacker can cause named to crash.

Remediation

Vendor Solution

Upgrade to the patched release most closely related to your current version of BIND: BIND 9.16.33, BIND 9.18.7, BIND 9.19.5, or for BIND Supported Preview Edition (a special feature preview branch of BIND provided to eligible ISC support customers): BIND 9.16.33-S1.


Vendor Workaround

Setting stale-answer-client-timeout to off or to an integer greater than 0 will prevent BIND from crashing due to this issue.

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-5235-1 bind9 security update
EUVD EUVD EUVD-2022-42509 By sending specific queries to the resolver, an attacker can cause named to crash.
Ubuntu USN Ubuntu USN USN-5626-1 Bind vulnerabilities
History
Type Values Removed Values Added
CPEs cpe:2.3:a:isc:bind:9.16.14:-:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.18.0:*:*:*:-:*:*:*
cpe:2.3:a:isc:bind:9.19.0:*:*:*:-:*:*:*
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Sources

Status
PUBLISHED
Assigner
isc
Published
Updated
Sep 17, 2024, 1:56 AM
Reserved
Sep 1, 2022, 12:00 AM
Status
Modified
Published
Sep 21, 2022, 11:15 AM
Modified
Jun 17, 2026, 4:58 AM
Severity
Important
Public date
Sep 21, 2022, 12:00 AM