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             AUSCERT External Security Bulletin Redistribution

                               ESB-2010.0853
            Multiple XSS and denial of service vulnerabilities
                             21 September 2010

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           OTRS 2.4.x, OTRS 2.3.x
Publisher:         OTRS
Operating System:  Windows
                   UNIX variants (UNIX, Linux, OSX)
Impact/Access:     Denial of Service    -- Remote/Unauthenticated      
                   Cross-site Scripting -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2010-2080  

Original Bulletin: 
   http://otrs.org/advisory/OSA-2010-02-en/

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- --------------------------------------------------------------------------------
 OTRS Security Advisory 2010-02                           <security@otrs.org>
- --------------------------------------------------------------------------------
 ID:         OSA-2010-02
 Date:       2010-09-15
 Title:      Multiple XSS and denial of service vulnerabilities
 Severity:   Less critical
 Product:    OTRS 2.4.x, OTRS 2.3.x
 Fixed in:   OTRS 2.4.8, OTRS 2.3.6
 URL:        http://otrs.org/advisory/OSA-2010-02-en/
 CVE:        CVE-2010-2080
- --------------------------------------------------------------------------------

This Advisory covers vulnerabilities discovered in the OTRS core system.

Multiple Cross Site Scripting issues

  Missing HTML quoting allows authenticated agents or customers to inject
  HTML tags.

  This vulnerability allows an attacker to inject script code
  into the OTRS web-interface which will be loaded and executed
  in the browsers of system users.

Possible Denial of Service Attack

  Perl's regular expressions consume 100% CPU time on the server
  if an agents or customer views an affected article.

  To exploit this vulnerability the malicious user needs to send
  extremely large HTML emails to your system address.

Affected by these vulnerabilities are all releases of OTRS 2.3.x and 2.4.x up
to and including 2.4.7.

These vulnerabilities are fixed in OTRS 2.3.6 and OTRS 2.4.8.

Fixed OTRS releases can be found at:

 o http://otrs.org/releases/

As a workaround it's also possible to replace the following files by a version
that has been fixed.

o OTRS 2.4.x:
 o Kernel/Output/HTML/Standard/AgentStatsOverview.dtl v1.7.2.1
 o Kernel/Modules/AdminCustomerUser.pm v1.57.2.1
 o Kernel/Modules/AdminCustomerUserGroup.pm v1.18.2.2
 o Kernel/Output/HTML/Standard/AdminCustomerUserGroupForm.dtl v1.10.2.1
 o Kernel/Modules/CustomerTicketOverView.pm v1.50.2.1
 o Kernel/System/HTMLUtils.pm v1.12.2.3

o OTRS 2.3.x:
 o Kernel/Output/HTML/Standard/AgentStatsOverview.dtl v1.4.2.1
 o Kernel/Modules/AdminCustomerUser.pm v1.55.2.1
 o Kernel/Modules/AdminCustomerUserGroup.pm v1.16.2.2
 o Kernel/Output/HTML/Standard/AdminCustomerUserGroupForm.dtl v1.9.2.1

Also available via web http://source.otrs.org/.

Please send information regarding vulnerabilities in OTRS to
security@otrs.org.

Many thanks to Aaron Roberts, Alexander Neufeld, Arnfinn Roland and
Marcus Krause (TYPO3 Security Team - http://t3sec.info/) for discovering
and reporting these vulnerabilities.

Copyright (c) OTRS AG, <http://otrs.org/>

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===========================================================================
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