Vulnerability identifier: #VU66715
Vulnerability risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-755
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 incorrect exceptions handling with enabled protobuf logging. A remote attacker can send a specially crafted request to the DNS server and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
PowerDNS Recursor: 4.7.0 - 4.7.1, 4.6.0 - 4.6.2, 4.5.0 alpha1 - 4.5.9, 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-2022-02.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.