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Debian Security Advisory DSA 3763-1 (pdns-recursor - security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Florian Heinz and Martin Kluge reported that pdns-recursor, a recursive DNS server, parses all records present in a query regardless of whether they are needed or even legitimate, allowing a remote, unauthenticated attacker to cause an abnormal CPU usage load on the pdns server, resulting in a partial denial of service if the system becomes overloaded.
Affected Software
Affected Software
pdns-recursor on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
For the stable distribution (jessie), this problem has been fixed in version 3.6.2-2+deb8u3. We recommend that you upgrade your pdns-recursor packages.