Debian DSA-3910-1 : knot - security update

medium Nessus Plugin ID 101555

Synopsis

The remote Debian host is missing a security-related update.

Description

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.

Solution

Upgrade the knot packages.

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.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=865678

https://packages.debian.org/source/jessie/knot

https://packages.debian.org/source/stretch/knot

https://www.debian.org/security/2017/dsa-3910

Plugin Details

Severity: Medium

ID: 101555

File Name: debian_DSA-3910.nasl

Version: 3.8

Type: local

Agent: unix

Published: 7/17/2017

Updated: 1/4/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:knot, cpe:/o:debian:debian_linux:8.0, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 7/14/2017

Reference Information

CVE: CVE-2017-11104

DSA: 3910