#VU71530 Input validation error in ISC BIND - CVE-2022-3736

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Main Vulnerability Database Vulnerabilities #VU71530

#VU71530 Input validation error in ISC BIND - CVE-2022-3736

Published: January 25, 2023 / Updated: February 2, 2023


Vulnerability identifier: #VU71530
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-3736
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
ISC BIND
Software vendor:
ISC

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send specially crafted RRSIG query to the DNS server and perform a denial of service (DoS) attack.

Successful exploitation of the vulnerability requires that 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.


Remediation

Install updates from vendor's website.

External links