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CVE-2017-11104

Published: 8 July 2017

Knot DNS before 2.4.5 and 2.5.x before 2.5.2 contains a flaw within the TSIG protocol implementation that would allow an attacker with a valid key name and algorithm to bypass TSIG authentication if no additional ACL restrictions are set, because of an improper TSIG validity period check.

Priority

Medium

Cvss 3 Severity Score

5.9

Score breakdown

Status

Package Release Status
knot
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Not vulnerable
(2.6.5-3)
cosmic Not vulnerable
(2.6.5-3)
disco Not vulnerable
(2.6.5-3)
eoan Not vulnerable
(2.6.5-3)
focal Not vulnerable
(2.6.5-3)
groovy Not vulnerable
(2.6.5-3)
hirsute Not vulnerable
(2.6.5-3)
impish Not vulnerable
(2.6.5-3)
jammy Not vulnerable
(2.6.5-3)
kinetic Not vulnerable
(2.6.5-3)
lunar Not vulnerable
(2.6.5-3)
mantic Not vulnerable
(2.6.5-3)
trusty Does not exist
(trusty was needed)
upstream
Released (2.5.3-1)
xenial Needed

yakkety Ignored
(end of life)
zesty Ignored
(end of life)

Severity score breakdown

Parameter Value
Base score 5.9
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N