Vulnerability identifier: #VU71397
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-835
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 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.Mitigation
Install updates from vendor's website.
Vulnerable software versions
PowerDNS Recursor: 4.8.0
External links
http://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2023-01.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.