Bug 865283 (CVE-2012-4192)

Summary: CVE-2012-4192 Mozilla: defaultValue security checks not applied (firefox-16) (MFSA 2012-89)
Product: [Other] Security Response Reporter: Huzaifa S. Sidhpurwala <huzaifas>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: urgent Docs Contact:
Priority: urgent    
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: 2012-10-11 06:35:05 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Blocks: 865235    

Description Huzaifa S. Sidhpurwala 2012-10-11 06:34:31 UTC 
Mozilla security researcher moz_bug_r_a4 reported a regression where security wrappers are unwrapped without doing a security check in defaultValue(). This can allow for improper access access to the Location object and the potential for arbitrary code execution.

Security researcher Gareth Heyes also blogged about a Firefox 16 only symptom that is fixed in the updated versions.

This issue only affects Firefox 16.0 and does not affect the ESR version.

External Reference:

http://www.mozilla.org/security/announce/2012/mfsa2012-89.html


Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Gareth Heyes 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