Bug 1471117 (CVE-2017-11104)

Summary: CVE-2017-11104 knot: TSIG authentication bypass due to improper TSIG validity period check
Product: [Other] Security Response Reporter: Adam Mariš <amaris>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED UPSTREAM QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: jv+fedora, pspacek, pwouters
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: knot 2.4.5, knot 2.5.2 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-08 03:16:36 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1471118, 1471119    
Bug Blocks:    

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.