Bug 1152362 (CVE-2014-1580)

Summary: CVE-2014-1580 Mozilla: Further uninitialized memory use during GIF rendering (MFSA 2014-78)
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
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-10-14 02:59:29 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 1144388    

Description Huzaifa S. Sidhpurwala 2014-10-14 02:24:55 UTC 
Google security researcher Michal Zalewski reported that when a malformed GIF image is repeatedly rendered within a <canvas> element, memory may not always be properly initialized. The resulting series of images then uses this uninitialized memory during rendering, allowing data to potentially leak to web content. 


External Reference:

http://www.mozilla.org/security/announce/2014/mfsa2014-78.html


Acknowledgements:

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