Bug 827843 (CVE-2012-1940, CVE-2012-1941, CVE-2012-1947)

Summary: CVE-2012-1940 CVE-2012-1941 CVE-2012-1947 Mozilla: Buffer overflow and use-after-free issues found using Address Sanitizer (MFSA 2012-40)
Product: [Other] Security Response Reporter: Huzaifa S. Sidhpurwala <huzaifas>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: urgent Docs Contact:
Priority: urgent    
Version: unspecifiedCC: gecko-bugs-nobody, jrusnack, security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2012-06-07 00:26:39 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 816119    

Description Huzaifa S. Sidhpurwala 2012-06-03 09:01:50 UTC 
Security researcher Abhishek Arya of Google used the Address Sanitizer tool to uncover several issues: two heap buffer overflow bugs and a use-after-free problem. The first heap buffer overflow was found in conversion from unicode to native character sets when the function fails. The use-after-free occurs in nsFrameList when working with column layout with absolute positioning in a container that changes size. The second buffer overflow occurs in nsHTMLReflowState when a window is resized on a page with nested columns and a combination of absolute and relative positioning. All three of these issues are potentially exploitable. 

Reference:
http://www.mozilla.org/security/announce/2012/mfsa2012-40.html
Comment 1 Murray McAllister 2012-06-05 03:23:23 UTC 
Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue.
Upstream acknowledges security researcher Abhishek Arya of Google as the
original reporter.
Comment 2 errata-xmlrpc 2012-06-05 20:59:39 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2012:0710 https://rhn.redhat.com/errata/RHSA-2012-0710.html
Comment 3 errata-xmlrpc 2012-06-06 23:51:36 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 5

Via RHSA-2012:0715 https://rhn.redhat.com/errata/RHSA-2012-0715.html