What is CVE-2022-3736?

CVE-2022-3736 is a high-severity vulnerability in Isc Bind, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2023-01-26.

How severe is CVE-2022-3736?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2022-3736 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in Isc Bind

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. 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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.487 (98.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Isc Bind — versions 9.16.11, 9.16.13, 9.16.14
Isc Bind 9 — versions 9.16.12, 9.18.0, 9.19.0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

karimhabush/cyberowl

References

security-officer@isc.org (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2022-3736?: CVE-2022-3736 is a high-severity vulnerability in Isc Bind, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2023-01-26.
How severe is CVE-2022-3736?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2022-3736 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.