Bug 1471117 (CVE-2017-11104) - CVE-2017-11104 knot: TSIG authentication bypass due to improper TSIG validity period check
Summary: CVE-2017-11104 knot: TSIG authentication bypass due to improper TSIG validity...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2017-11104
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1471118 1471119
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-07-14 12:52 UTC by Adam Mariš
Modified: 2019-09-29 14:16 UTC (History)
3 users (show)

Fixed In Version: knot 2.4.5, knot 2.5.2
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Clone Of:
Environment:
Last Closed: 2019-06-08 03:16:36 UTC
Embargoed:

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Description Adam Mariš 2017-07-14 12:52:59 UTC 
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.

References:

https://lists.nic.cz/pipermail/knot-dns-users/2017-June/001144.html
Comment 1 Adam Mariš 2017-07-14 12:53:26 UTC 
Created knot tracking bugs for this issue:

Affects: epel-all [bug 1471119]
Affects: fedora-all [bug 1471118]
Comment 2 Product Security DevOps Team 2019-06-08 03:16:36 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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