Bug 882910 (CVE-2012-6051)

Summary:	CVE-2012-6051 firefox, thunderbird, xulrunner: Google CityHash hash function collisions (oCERT-2012-001)
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	caillon+fedoraproject, caillon, gecko-bugs-nobody, gecko-bugs-nobody, jhorak, johnp, stransky, walters
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:	2012-12-06 06:43:12 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:
Bug Depends On:
Bug Blocks:	882913

Description Jan Lieskovsky 2012-12-03 10:41:19 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2012-6051 to the following vulnerability:

Google CityHash computes hash values without properly restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table, as demonstrated by a universal multicollision attack.

References:
[1] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-6051
[2] http://2012.appsec-forum.ch/conferences/#c17
[3] http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf
[4] http://code.google.com/p/cityhash/source/browse/trunk/NEWS
[5] https://www.131002.net/data/talks/appsec12_slides.pdf

oCERT advisory:
[6] http://www.ocert.org/advisories/ocert-2012-001.html

Comment 2 Huzaifa S. Sidhpurwala 2012-12-06 06:43:12 UTC

Statement:

Not Vulnerable. This issue does not affect the versions of xulrunner, firefox and thunderbird as shipped with Red Hat Enterprise Linux 5 and 6.