Vulnerability identifier: #VU32138
Vulnerability risk: Medium
Exploitation vector: Network
Exploit availability: No
Server applications / DNS servers
Vendor: PowerDNS.COM B.V.
The vulnerability allows a remote authenticated user to perform a denial of service (DoS) attack.
An issue has been found in PowerDNS Authoritative Server versions up to and including 3.4.10, 4.0.1 allowing an authorized user to crash the server by inserting a specially crafted record in a zone under their control then sending a DNS query for that record. The issue is due to an integer overflow when checking if the content of the record matches the expected size, allowing an attacker to cause a read past the buffer boundary.
Install update from vendor's website.
Vulnerable software versions
PowerDNS: 3.4.0 - 3.4.10
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?