PT-2023-6837 · Isc+9 · Bind 9+9

Published 2023-01-25 · Updated 2024-06-15 · CVE-2022-3736

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions BIND 9 versions 9.16.12 through 9.16.36 BIND 9 versions 9.18.0 through 9.18.10 BIND 9 versions 9.19.0 through 9.19.8 BIND 9 versions 9.16.12-S1 through 9.16.36-S1

Description The issue is related to a flaw in the implementation of the stale-answer-client-timeout option, which can cause the BIND 9 resolver to crash when stale cache and stale answers are enabled and the resolver receives an RRSIG query. This can be exploited by a remote attacker to cause a denial of service. The issue is caused by insufficient input validation.

Recommendations For BIND 9 versions 9.16.12 through 9.16.36, update to a version outside of this range or apply a configuration change to disable the stale-answer-client-timeout option. For BIND 9 versions 9.18.0 through 9.18.10, update to a version outside of this range or apply a configuration change to disable the stale-answer-client-timeout option. For BIND 9 versions 9.19.0 through 9.19.8, update to a version outside of this range or apply a configuration change to disable the stale-answer-client-timeout option. For BIND 9 versions 9.16.12-S1 through 9.16.36-S1, update to a version outside of this range or apply a configuration change to disable the stale-answer-client-timeout option. As a temporary workaround, consider disabling the stale-answer-client-timeout option until a patch is available.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

ALSA-2023:2261

ALSA-2023:2792

ALT-PU-2023-1130

ALT-PU-2023-1185

AZL-13203

BDU:2023-07832

CESA-2023_2792

CVE-2022-3736

DSA-5329-1

OESA-2023-1067

OESA-2023-1068

OPENSUSE-SU-2023_0341-1

OPENSUSE-SU-2024:12641-1

RHSA-2023:2261

RHSA-2023:2792

RHSA-2023_2261

RHSA-2023_2792

SUSE-SU-2023:0341-1

USN-5827-1

Affected Products

Alt Linux

Almalinux

Bind 9

Bind Server

Centos

Ibm Aix

Linuxmint

Red Hat

Suse

Ubuntu

References · 53

• https://bdu.fstec.ru/vul/2023-07832 · Security Note
• https://linux.oracle.com/errata/ELSA-2023-2792.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-3736 · Security Note
• https://osv.dev/vulnerability/DSA-5329-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-3736 · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/689131 · Security Note
• https://errata.almalinux.org/8/ALSA-2023-2792.html · Vendor Advisory
• https://kb.isc.org/docs/cve-2022-3736 · Vendor Advisory
• https://errata.almalinux.org/9/ALSA-2023-2261.html · Vendor Advisory
• https://osv.dev/vulnerability/USN-5827-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-3736 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2023-2261.html · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-3736 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:12641-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20230315SE81 · Vendor Advisory