Bug 877629 (CVE-2012-4207)

Summary: CVE-2012-4207 Mozilla: Improper character decoding in HZ-GB-2312 charset (MFSA 2012-101)
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
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Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2013-01-16 17:00:35 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: 873088    

Description Huzaifa S. Sidhpurwala 2012-11-17 11:55:11 UTC 
Security researcher Masato Kinugawa found when HZ-GB-2312 charset encoding is used for text, the "~" character will destroy another character near the chunk delimiter. This can lead to a cross-site scripting (XSS) attack in pages encoded in HZ-GB-2312. 


External Reference:

http://www.mozilla.org/security/announce/2012/mfsa2012-101.html


Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Masato Kinugawa as the original reporter.
Comment 1 errata-xmlrpc 2012-11-20 21:51:46 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 5

Via RHSA-2012:1483 https://rhn.redhat.com/errata/RHSA-2012-1483.html
Comment 2 errata-xmlrpc 2012-11-20 22:12:21 UTC 
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