Bug 1342899 (CVE-2016-2832)

Summary:	CVE-2016-2832 Mozilla: Information disclosure of disabled plugins through CSS pseudo-classes (MFSA 2016-60)
Product:	[Other] Security Response	Reporter:	Huzaifa S. Sidhpurwala <huzaifas>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Last Closed:	2016-06-09 03:13:26 UTC	Type:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1335788

Description Huzaifa S. Sidhpurwala 2016-06-06 04:20:18 UTC

Mozilla developer John Schoenick reported that CSS pseudo-classes can be used by web content to leak information on plugins that are installed but disabled. This can be used for information disclosure through a fingerprinting attack that lists all of the plugins installed by a user on a system, even when they are disabled.



External Reference:

https://www.mozilla.org/security/announce/2016/mfsa2016-60.html


Acknowledgements:

Name: the Mozilla project
Upstream:  John Schoenick 

Statement:

This issue does not affect the version of firefox and thunderbird as shipped with Red Hat Enterprise Linux 5, 6 and 7.