Bug 1353565 (CVE-2016-6172) - CVE-2016-6172 pdns: Improper restriction of zone size limit
Summary: CVE-2016-6172 pdns: Improper restriction of zone size limit
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2016-6172
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: 1353566 1353567
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-07-07 13:10 UTC by Adam Mariš
Modified: 2019-09-29 13:52 UTC (History)
3 users (show)

Fixed In Version:
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Last Closed: 2016-07-07 13:27:38 UTC
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Description Adam Mariš 2016-07-07 13:10:56 UTC 
It was found that PowerDNS 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

Proposed patch:

https://github.com/sischkg/xfer-limit/blob/master/powerdns-3.4.7-xfer-limit-0.0.1.patch
Comment 1 Adam Mariš 2016-07-07 13:11:54 UTC 
Created pdns tracking bugs for this issue:

Affects: fedora-all [bug 1353566]
Affects: epel-all [bug 1353567]
Comment 2 Martin Prpič 2016-07-08 06:42:24 UTC 
Upstream issue:

https://github.com/PowerDNS/pdns/issues/4128

The following patches are still under review but should be merged soon:

- Master: https://github.com/PowerDNS/pdns/pull/4133
- 3.4.x: https://github.com/PowerDNS/pdns/pull/4134
Comment 3 Fedora Update System 2016-08-08 20:23:57 UTC 
pdns-4.0.1-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
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