This security bulletin contains one medium risk vulnerability.
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.Mitigation
Install update from vendor's website.Vulnerable software versions
PowerDNS: 3.4.0 - 3.4.10Fixed software versions
Q & A
Can this vulnerability be exploited remotely?
How the attacker can exploit this vulnerability?
Is there known malware, which exploits this vulnerability?