Bug 840208 (CVE-2012-1957)

Summary: CVE-2012-1957 Mozilla: Improper filtering of javascript in HTML feed-view (MFSA 2012-47)
Product: [Other] Security Response Reporter: Huzaifa S. Sidhpurwala <huzaifas>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: gecko-bugs-nobody, jhorak, security-response-team, stransky
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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Last Closed: 2012-07-18 07:30:35 UTC 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: 835033    

Description Huzaifa S. Sidhpurwala 2012-07-14 12:00:23 UTC 
Security researcher Mario Heiderich reported that javascript could be executed in the HTML feed-view using <embed> tag within the RSS <description>. This problem is due to <embed> tags not being filtered out during parsing and can lead to a potential cross-site scripting (XSS) attack. The flaw existed in a parser utility class and could affect other parts of the browser or add-ons which rely on that class to sanitize untrusted input. 

Reference:
http://www.mozilla.org/security/announce/2012/mfsa2012-47.html

Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue.  Upstream acknowledges Security researcher Mario Heiderich as the original reporter of this issue.
Comment 1 errata-xmlrpc 2012-07-17 18:57:46 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2012:1089 https://rhn.redhat.com/errata/RHSA-2012-1089.html
Comment 2 errata-xmlrpc 2012-07-17 19:28:11 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2012:1088 https://rhn.redhat.com/errata/RHSA-2012-1088.html