Bug 649056 (CVE-2010-3870)

Summary: CVE-2010-3870 php: XSS mitigation bypass via utf8_decode()
Product: [Other] Security Response Reporter: Vincent Danen <vdanen>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dkutalek, fedora, jorton, rpm
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2011-02-04 09:08:57 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 626733, 626734, 626735, 626736, 649186, 650877, 651953, 670461    
Bug Blocks:    

Description Vincent Danen 2010-11-02 20:36:10 UTC 
A flaw in how PHP handles decoding UTF8 sequences was reported [1], [2].  A number of attack scenarios are mentioned there that permit malformed UTF8 sequences to bypass intended XSS protections.

This issue has been assigned the name CVE-2010-3870 and was fixed in PHP 5.3 [3], although it looks as though parts of the issue were fixed in the 5.2.11 release.

[1] http://bugs.php.net/bug.php?id=49687
[2] http://sirdarckcat.blogspot.com/2009/10/couple-of-unicode-issues-on-php-and.html
[3] http://svn.php.net/viewvc/?view=revision&revision=304959
Comment 4 Huzaifa S. Sidhpurwala 2010-11-03 06:49:35 UTC 
Created php tracking bugs for this issue

Affects: fedora-all [bug 649186]
Comment 11 Vincent Danen 2010-11-15 17:30:26 UTC 
Fixed on 5.2 branch now:

http://svn.php.net/viewvc?view=revision&revision=305055
Comment 12 errata-xmlrpc 2010-11-29 21:34:13 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 4
  Red Hat Enterprise Linux 5

Via RHSA-2010:0919 https://rhn.redhat.com/errata/RHSA-2010-0919.html
Comment 14 errata-xmlrpc 2011-02-03 18:56:24 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0195 https://rhn.redhat.com/errata/RHSA-2011-0195.html