PT-2022-6541 · Isc+2 · Bind+2

Vincent Levigneron · Published 2022-03-16 · Updated 2024-06-15 · CVE-2022-0635

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 version 9.18.0

Description The issue is related to a reachable assertion when handling DNS queries. An attacker can exploit this by sending repeated patterns of specific queries to servers with the DNSSEC-Validated Cache feature enabled, causing an INSIST error in query.c:query dname and leading to the unexpected termination of the named process. This occurs when a vulnerable version of named receives a series of specific queries, resulting in a failed assertion check.

Recommendations For BIND version 9.18.0, consider disabling the DNSSEC-Validated Cache feature as a temporary workaround until a patch is available. Restrict access to the query dname function to minimize the risk of exploitation. Avoid using the synth-from-dnssec feature in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Assertion Failure

Weakness Enumeration

CWE-617

Related Identifiers

BDU:2023-02161

CVE-2022-0635

OPENSUSE-SU-2024:12081-1

Affected Products

Bind

Bind Server

Red Os

References · 22

• https://osv.dev/vulnerability/openSUSE-SU-2024:12081-1 · Vendor Advisory
• https://kb.isc.org/v1/docs/cve-2022-0635 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2022-0635 · Security Note
• http://repo.red-soft.ru/redos/7.3c/x86_64/updates · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-0635 · Security Note
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20230315SE81 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-0635 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-0635 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-0635 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-02161 · Security Note
• https://osv.dev/vulnerability/CVE-2022-0635 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-0635 · Vendor Advisory
• https://suse.com/security/cve/CVE-2022-0396 · Note
• https://suse.com/security/cve/CVE-2022-0635 · Note
• https://t.me/isacarusec/5135 · Telegram Post