[Openstack] [Security][LP# 1471161] Designate mDNS DoS through incorrect handling of large RecordSets

Kiall Mac Innes kiall at macinnes.ie
Wed Jul 29 13:30:22 UTC 2015


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Two CVE numbers have been assigned to track the two parts of this:

CVE-2015-5694 and CVE-2015-5695

https://security-tracker.debian.org/tracker/CVE-2015-5694
https://security-tracker.debian.org/tracker/CVE-2015-5695

Thanks,
Kiall

On 28/07/15 16:52, Kiall Mac Innes wrote:
> 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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