Infinite loop in PowerDNS Recursor - CVE-2023-22617
Published: January 20, 2023
Vulnerability identifier: #VU71397
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2023-22617
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.Affected software
PowerDNS Recursor
How to mitigate CVE-2023-22617
Install updates from vendor's website.
PowerDNS Recursor - update to 4.8.1