Bug 877627 (CVE-2012-4208)

Summary: CVE-2012-4208 Mozilla: XrayWrappers exposes chrome-only properties when not in chrome compartment (MFSA 2012-99)
Product: [Other] Security Response Reporter: Huzaifa S. Sidhpurwala <huzaifas>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: security-response-team
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2012-11-17 11:36:40 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Blocks: 873088    

Description Huzaifa S. Sidhpurwala 2012-11-17 11:36:08 UTC 
Mozilla developer Peter Van der Beken discovered that same-origin XrayWrappers expose chrome-only properties even when not in a chrome compartment. This can allow web content to get properties of DOM objects that are intended to be chrome-only.

In general these flaws cannot be exploited through email in the Thunderbird and SeaMonkey products because scripting is disabled, but are potentially a risk in browser or browser-like contexts in those products.


External Reference:

http://www.mozilla.org/security/announce/2012/mfsa2012-99.html


Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Peter Van der Beken as the original reporter.

Statement:

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