Bug 815026 (CVE-2012-0477)

Summary: CVE-2012-0477 Mozilla: Potential XSS through ISO-2022-KR/ISO-2022-CN decoding issues (MFSA 2012-29)
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, security-response-team
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: 2012-04-24 21:02:47 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: 812268    

Description Huzaifa S. Sidhpurwala 2012-04-22 07:16:02 UTC 
Security researcher Masato Kinugawa found that during the decoding of ISO-2022-KR and ISO-2022-CN character sets, characters near 1024 bytes are treated incorrectly, either doubling or deleting bytes. On certain pages it might be possible for an attacker to pad the output of the page such that these errors fall in the right place to affect the structure of the page, allowing for cross-site script (XSS) injection. 

Reference:
http://www.mozilla.org/security/announce/2012/mfsa2012-29.html
Comment 1 Vincent Danen 2012-04-24 17:58:27 UTC 
Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue.  Upstream acknowledges Masato Kinugawa as the original reporter.
Comment 2 errata-xmlrpc 2012-04-24 19:46:43 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2012:0516 https://rhn.redhat.com/errata/RHSA-2012-0516.html
Comment 3 errata-xmlrpc 2012-04-24 19:58:58 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2012:0515 https://rhn.redhat.com/errata/RHSA-2012-0515.html