Bug 1353576 (CVE-2016-6173) - CVE-2016-6173 nsd: Improper restriction of zone size limit
Summary: CVE-2016-6173 nsd: Improper restriction of zone size limit
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2016-6173
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1353577 1353578
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-07-07 13:21 UTC by Adam Mariš
Modified: 2019-09-29 13:52 UTC (History)
5 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2016-07-07 13:28:09 UTC
Embargoed:

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Description Adam Mariš 2016-07-07 13:21:43 UTC 
It was found that NSD does not implement reasonable restrictions for zone sizes. This allows an explicitly configured primary DNS server for a zone to crash a secondary DNS server, affecting service of other zones hosted on the same secondary server.

CVE request:

http://seclists.org/oss-sec/2016/q3/19

Upstream bug:

https://www.nlnetlabs.nl/bugs-script/show_bug.cgi?id=790

Proposed patches:

https://github.com/sischkg/xfer-limit/blob/master/nsd-4.1.10-xfer-limit-0.0.2.patch
https://github.com/sischkg/xfer-limit/blob/master/nsd-4.1.10-xfer-limit-0.0.3.patch
https://github.com/sischkg/xfer-limit/blob/master/nsd-4.1.5-xfer-limit-0.0.1.patch
Comment 1 Adam Mariš 2016-07-07 13:22:10 UTC 
Created nsd tracking bugs for this issue:

Affects: fedora-all [bug 1353577]
Affects: epel-all [bug 1353578]
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