Bug 1315579 (CVE-2016-1963)

Summary: CVE-2016-1963 Mozilla: Memory corruption when modifying a file being read by FileReader (MFSA 2016-26)
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: 2016-03-09 08:38:20 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Blocks: 1313724    

Description Huzaifa S. Sidhpurwala 2016-03-08 06:18:27 UTC 
Security researcher Oriol reported memory corruption when local files are modified (by either the user or another program) at the same time being read using the FileReader API. This flaw requires that input be taken from a local file in order to be triggered and cannot be triggered by web content. This results in a potentially exploitable crash when triggered. 


External Reference:

https://www.mozilla.org/security/announce/2016/mfsa2016-26.html


Acknowledgements:

Name: The Mozilla Project
Upstream: Oriol

Statement:

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