Vulnerability identifier: #VU74176
Vulnerability risk: Low
CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-345
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
PowerDNS Recursor
Server applications /
DNS servers
Vendor: PowerDNS.COM B.V.
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists in the code responsible for protection against spoofing attacks. A remote attacker can send specially crafted DNS queries with spoofed IP address to force the PowerDNS Recursor to mark specific authoritative servers as not available, leading to a denial of service condition.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
PowerDNS Recursor: 4.8.0 - 4.8.3, 4.7.0 - 4.7.4, 4.6.0 - 4.6.5, 4.5.0 alpha1 - 4.5.12, 4.4.0 - 4.4.8, 4.3.0 - 4.3.7, 4.1.0 - 4.1.18, 4.2.0 - 4.2.5, 4.0.0 - 4.0.9
External links
http://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2023-02.html
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.