Bug 877633 (CVE-2012-4210)

Summary: CVE-2012-4210 Mozilla: CSS and HTML injection through Style Inspector (MFSA 2012-104)
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=20121120,reported=20121117,source=mozilla,cvss2=6.8/AV:N/AC:M/Au:N/C:P/I:P/A:P,rhel-5/firefox=affected,rhel-6/firefox=affected,rhel-5/thunderbird=notaffected,rhel-6/thunderbird=notaffected
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-01-16 11:51:26 EST Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Bug Depends On:    
Bug Blocks: 873088    

Description Huzaifa S. Sidhpurwala 2012-11-17 07:02:49 EST
Security researcher Mariusz Mlynski reported that when a maliciously crafted stylesheet is inspected in the Style Inspector, HTML and CSS can run in a chrome privileged context without being properly sanitized first. This can lead to arbitrary code execution.


External Reference:

http://www.mozilla.org/security/announce/2012/mfsa2012-104.html


Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Mariusz Mlynski as the original reporter.
Comment 1 errata-xmlrpc 2012-11-20 17:12:27 EST
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2012:1482 https://rhn.redhat.com/errata/RHSA-2012-1482.html