Bug 1494005 (CVE-2017-14339) - CVE-2017-14339 yadifa: Infinite loop due to insufficient checks in the DNS packet parser
Summary: CVE-2017-14339 yadifa: Infinite loop due to insufficient checks in the DNS pa...
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: CVE-2017-14339
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: 1494006 1494007
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-09-21 10:06 UTC by Andrej Nemec
Modified: 2019-09-29 14:22 UTC (History)
1 user (show)

Fixed In Version: yadifa 2.2.6
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Environment:
Last Closed: 2018-03-10 00:32:20 UTC
Embargoed:

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Description Andrej Nemec 2017-09-21 10:06:08 UTC 
The DNS packet parser in YADIFA before 2.2.6 does not check for the presence of infinite pointer loops, and thus it is possible to force it to enter an infinite loop. This can cause high CPU usage and makes the server unresponsive.

References:

https://github.com/yadifa/yadifa/blob/v2.2.6/ChangeLog
https://www.tarlogic.com/blog/fuzzing-yadifa-dns/
Comment 1 Andrej Nemec 2017-09-21 10:06:26 UTC 
Created yadifa tracking bugs for this issue:

Affects: epel-all [bug 1494006]
Affects: fedora-all [bug 1494007]
Comment 2 Denis Fateyev 2017-11-25 17:11:14 UTC 
Already fixed in updates
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