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PowerDNS Recursor DoS Vulnerability
Information
Severity
Severity
Medium
Family
Family
General
CVSSv2 Base
CVSSv2 Base
5.0
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Solution Type
Solution Type
Vendor Patch
Created
Created
6 years ago
Modified
Modified
5 years ago
Summary
PowerDNS Recursor is prone to a denial of service vulnerability.
Insight
Insight
An issue has been found in the parsing of authoritative answers in PowerDNS Recursor, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN.
Affected Software
Affected Software
PowerDNS Recursor from 4.0.0 up to and including 4.0.7.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Upgrade to version 4.0.8 or later.