CVE-2022-3736
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 48.7%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 48.71% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- isc/bind
- Source
- security-officer@isc.org
References
- https://kb.isc.org/docs/cve-2022-3736Vendor Advisory
- https://kb.isc.org/docs/cve-2022-3736Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.