[openstack-announce] [Security][LP# 1471161] Designate mDNS DoS through incorrect handling of large RecordSets

Kiall Mac Innes kiall at macinnes.ie
Tue Jul 28 15:52:36 UTC 2015


Launchpad Number: 1471161
CVE: TBA
Date: July 28, 2015
Title: Designate mDNS DoS through incorrect handling of large RecordSets
Reporter: Florian Weimer (Red Hat)
Products: Designate
Versions: 2015.1.0 through 1.0.0.0b1

Description:
Florian Weimer from Red Hat reported a vulnerability in Designate.
By creating a single RecordSet that exceeds the configured max allowed
DNS packet size, an authenticated user may cause the Designate mDNS
service to enter an infinite loop, triggering a DoS.

Liberty (development branch) fix:
https://review.openstack.org/206578

Kilo fix:
https://review.openstack.org/206580

Notes:
This fix will be included in a future 1.0.0.0b2 release.

References:
https://launchpad.net/bugs/1471161

-- Kiall Mac Innes, OpenStack Designate PTL
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