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             AUSCERT External Security Bulletin Redistribution

                               ESB-2010.0940
                    TWiki multiple cross-site scripting
                              19 October 2010

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

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

Product:           TWiki
Publisher:         ISS
Operating System:  UNIX variants (UNIX, Linux, OSX)
                   Windows
Impact/Access:     Cross-site Scripting -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2010-3841  

Original Bulletin: 
   http://xforce.iss.net/xforce/xfdb/62557

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TWiki multiple cross-site scripting
twiki-multiple-xss (62557) 	
The risk level is classified as Medium

Description:

TWiki is vulnerable to cross-site scripting, caused by improper validation of 
user-supplied input by the view and login scripts. A remote attacker could 
exploit this vulnerability using the rev or origurl parameter in a specially-
crafted URL to execute script in a victim's Web browser within the security 
context of the hosting Web site, once the URL is clicked. An attacker could 
use this vulnerability to steal the victim's cookie-based authentication 
credentials.

*CVSS:
  Base Score: 			4.3
  Access Vector: 		Network
  Access Complexity: 		Medium
  Authentication: 		None
  Confidentiality Impact: 	None
  Integrity Impact: 		Partial
  Availability Impact: 		None
 
  Temporal Score: 		3.7
  Exploitability: 		High
  Remediation Level: 		Official-Fix
  Report Confidence: 		Confirmed

Consequences:

Gain Access

Remedy:

Refer to Twiki Security Alert CVE-2010-3841 for patch, upgrade or suggested 
workaround information. See References.

References:

    * Twiki Security Alert CVE-2010-3841: XSS Vulnerability with rev parameter 
      & login script.
    * TWiki Web site: TWiki - the Open Source Enterprise Wiki and Web 2.0 
      Application Platform.
    * BID-44103: TWiki Multiple Cross Site Scripting Vulnerabilities
    * CVE-2010-3841: ** RESERVED ** This candidate has been reserved by an 
      organization or individual that will use it when announcing a new 
      security problem. When the candidate has been publicized, the details 
      for this candidate will be provided.
    * SA41796: TWiki Multiple Cross-Site Scripting Vulnerabilities

Platforms Affected:

    * TWiki TWiki 4.0.0
    * TWiki TWiki 4.0.1
    * TWiki TWiki 4.0.2
    * TWiki TWiki 4.0.3
    * TWiki TWiki 4.0.4
    * TWiki TWiki 4.0.5
    * TWiki TWiki 4.1.0
    * TWiki TWiki 4.1.1
    * TWiki TWiki 4.1.2
    * TWiki TWiki 4.2.0
    * TWiki TWiki 4.2.1
    * TWiki TWiki 4.2.2
    * TWiki TWiki 4.2.3
    * TWiki TWiki 4.2.4
    * TWiki TWiki 4.3.0
    * Twiki Twiki 4.3.1
    * Twiki Twiki 4.3.2
    * Twiki Twiki 5.0

Reported:

Oct 14, 2010

The information within this database may change without notice. Use of this 
information constitutes acceptance for use in an AS IS condition. There are 
NO warranties, implied or otherwise, with regard to this information or its 
use. Any use of this information is at the user's risk. In no event shall 
the author/distributor (IBM Internet Security Systems X-Force) be held 
liable for any damages whatsoever arising out of or in connection with the 
use or spread of this information.

For corrections or additions please email xforce@iss.net

* According to the Forum of Incident Response and Security Teams (FIRST), 
the Common Vulnerability Scoring System (CVSS) is an "industry open standard 
designed to convey vulnerability severity and help to determine urgency and 
priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY 
OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT 
OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this 
information constitutes acceptance for use in an AS IS condition. There are 
NO warranties, implied or otherwise, with regard to this information or its 
use. Any use of this information is at the user's risk. In no event shall 
IBM be held liable for any damages whatsoever arising out of or in connection 
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About IBM Internet Security Systems
IBM Internet Security Systems is a trusted security advisor to thousands of 
the world's leading businesses and governments, helping to provide pre-
emptive protection for networks, desktops and servers. The IBM Proventia? 
integrated security platform is designed to automatically protect against 
both known and unknown threats, helping to keep networks up and running and 
shield customers from online attacks before they impact business assets. IBM 
Internet Security Systems products and services are based on the proactive 
security intelligence of its X-Force? research and development team ? an 
unequivocal world authority in vulnerability and threat research. The IBM 
Internet Security Systems product line is also complemented by comprehensive 
Managed Security Services and Professional Security Services. For more 
information, visit the IBM Internet Security Systems Web site at www.iss.net 
or call 800-776-2362.

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