Bug 851918 (CVE-2012-3966)

Summary: CVE-2012-3966 Mozilla: Memory corruption with bitmap format images with negative height (MFSA 2012-61)
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, jhorak, security-response-team, stransky
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=critical,public=20120828,reported=20120827,source=mozilla,cvss2=6.8/AV:N/AC:M/Au:N/C:P/I:P/A:P,rhel-5/firefox=affected,rhel-5/thunderbird=affected,rhel-6/firefox=affected,rhel-6/thunderbird=affected
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2012-08-29 01:27:45 EDT Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On:    
Bug Blocks: 847589    

Description Huzaifa S. Sidhpurwala 2012-08-26 23:44:16 EDT
Security researcher Frédéric Hoguin reported two related issues with the decoding of bitmap (.BMP) format images embedded in icon (.ICO) format files. When processing a negative "height" header value for the bitmap image, a memory corruption can be induced, allowing an attacker to write random memory and cause a crash. This crash may be potentially exploitable. 

Reference:
http://www.mozilla.org/security/announce/2012/mfsa2012-61.html

Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Frédéric Hoguin as the original reporter of this flaw.
Comment 1 errata-xmlrpc 2012-08-29 00:24:05 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2012:1211 https://rhn.redhat.com/errata/RHSA-2012-1211.html
Comment 2 errata-xmlrpc 2012-08-29 00:44:35 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 5

Via RHSA-2012:1210 https://rhn.redhat.com/errata/RHSA-2012-1210.html