#VU71397 Infinite loop in PowerDNS Recursor - CVE-2023-22617

Vulnerability identifier: #VU71397

Vulnerability risk: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2023-22617

CWE-ID: CWE-835

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
PowerDNS Recursor

Software vendor:
PowerDNS.COM B.V.

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 when processing queries for misconfigured domains. A remote attacker can query a specially crafted or malicious domain and crash the DNS recursor.

Install updates from vendor's website.

• https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2023-01.html