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Debian Security Advisory DSA 3910-1 (knot - security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Clement Berthaux from Synaktiv discovered a signature forgery vulnerability in knot, an authoritative-only DNS server. This vulnerability allows an attacker to bypass TSIG authentication by sending crafted DNS packets to a server.
Affected Software
Affected Software
knot on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
For the oldstable distribution (jessie), this problem has been fixed in version 1.6.0-1+deb8u1. For the stable distribution (stretch), this problem has been fixed in version 2.4.0-3+deb9u1. For the testing (buster) and unstable (sid), this problem will be fixed in a later update. We recommend that you upgrade your knot packages.