Resource exhaustion in PowerDNS Recursor - CVE-2023-50868
Published: February 13, 2024 / Updated: August 23, 2024
Vulnerability identifier: #VU86378
CSH Severity: Medium
CVSS v4.0: 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:P/U:Green
CVE-ID: CVE-2023-50868
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: PowerDNS.COM B.V.
Affected software:
PowerDNS Recursor
PowerDNS Recursor
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation when processing DNSSEC related records. A remote attacker can trigger resource exhaustion by forcing the DNS server to query a specially crafted DNSSEC zone and perform a denial of service (DoS) attack.
How to mitigate CVE-2023-50868
Install updates from vendor's website.