Knot DNS 2.4.x < 2.4.4 / 2.5.x < 2.5.2 TSIG Authentication Bypass Vulnerability (CVE-2017-11104)

medium Nessus Plugin ID 106196

Synopsis

The remote DNS server is affected by an authentication bypass vulnerability.

Description

The Knot DNS server running on the remote host is version 2.4.x prior to 2.4.5 or 2.5.x prior to 2.5.2. It is, therefore, affected by a TSIG authentication bypass vulnerability.

Solution

Upgrade to Knot DNS version 2.4.5 / 2.5.2 or later.

See Also

https://gitlab.labs.nic.cz/knot/knot-dns/raw/v2.4.5/NEWS

https://gitlab.labs.nic.cz/knot/knot-dns/raw/v2.5.2/NEWS

http://www.nessus.org/u?42ae186b

http://www.nessus.org/u?8ee559d2

Plugin Details

Severity: Medium

ID: 106196

File Name: knot_dns_2_5_2.nasl

Version: 1.4

Type: remote

Family: DNS

Published: 1/19/2018

Updated: 7/13/2018

Configuration: Enable paranoid mode

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

Temporal Vector: E:U/RL:OF/RC:C

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: E:U/RL:O/RC:C

Vulnerability Information

CPE: x-cpe:/a:cz.nic:knot_dns

Required KB Items: knot_dns/proto, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 6/23/2017

Vulnerability Publication Date: 6/23/2017

Reference Information

CVE: CVE-2017-11104

BID: 99598