Bug 458122 (CVE-2008-3337)

Summary:	CVE-2008-3337 pdns: not responding invalid queries my simplify spoofing attacks
Product:	[Other] Security Response	Reporter:	Tomas Hoger <thoger>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	ruben
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2008-08-08 06:51:35 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Tomas Hoger 2008-08-06 15:28:30 UTC

PowerDNS upstream released new pdns versions - 2.9.21.1 - fixing a security issue reported by Brian Dowling of Simplicity Communications and Florian Weimer of Debian Security Team:

PowerDNS does not respond to certain queries it considers malformed. This in itself is not a problem, and was even thought of as a security measure.

Brian and Florian have discovered that not answering a query for an invalid DNS record within a valid domain allows for a larger spoofing window of the valid domain. Because of the Kaminsky-discovery, this has become bad.

For a sophisticated attacker, this provides no benefit. However, such a long
window allows unsophisticated hackers to achieve better results.

Upstream patch:
http://wiki.powerdns.com/cgi-bin/trac.fcgi/changeset/1239

Comment 1 Tomas Hoger 2008-08-06 15:31:56 UTC

Keeping this private for a little longer, until embargo date/time chosen by upstream, even though it's more or less blown up now.

Comment 2 Ruben Kerkhof 2008-08-06 16:43:10 UTC

I've just build the updates for FC-8, FC-9 and devel.
They've been requested in Bodhi to be pushed to stable.

Comment 3 Fedora Update System 2008-08-07 23:53:02 UTC

pdns-2.9.21.1-1.fc9 has been pushed to the Fedora 9 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 4 Fedora Update System 2008-08-07 23:55:46 UTC

pdns-2.9.21.1-1.fc8 has been pushed to the Fedora 8 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 5 Red Hat Product Security 2008-08-08 06:51:35 UTC

This issue was addressed in:

Fedora:
  https://admin.fedoraproject.org/updates/F8/FEDORA-2008-7083
  https://admin.fedoraproject.org/updates/F9/FEDORA-2008-7048