Bug 1220604 (CVE-2015-2712)

Summary: CVE-2015-2712 Mozilla: Out-of-bounds read and write in asm.js validation (MFSA 2015-50)
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: 2015-05-12 18:24:13 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Blocks: 1209788    

Description Huzaifa S. Sidhpurwala 2015-05-12 01:15:33 UTC
Security researcher Dougall Johnson reported an out-of-bounds read and write in asm.js during JavaScript validation due to an error in how heap lengths are defined. This results in a potentially exploitable crash and could allow for the reading of random memory which may contain sensitive data. 



External Reference:

http://www.mozilla.org/security/announce/2015/mfsa2015-50.html


Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Dougall Johnson as the original reporter.

Statement:

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