Microsoft Sharepoint Upload.aspx cross-site scripting

sharepoint-aspx-xss (56597) The risk level is classified as MediumMedium Risk

Description:

Microsoft Sharepoint is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the Upload.aspx script within the Documents module. A remote authenticated attacker could exploit this vulnerability using an uploaded TXT file to inject malicious script into a Web page which would be executed in a victim's Web browser within the security context of the hosting Web site, once the page is viewed. An attacker could use this vulnerability to steal the victim's cookie-based authentication credentials.

*CVSS:

Base Score: 3.5
  Access Vector: Network
  Access Complexity: Medium
  Authentication: Single
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: None
 
Temporal Score: 3
  Exploitability: High
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Upgrade to the latest version of SharePoint Server (2010 or later), available from the Microsoft Office SharePoint Server Web site. See References.

References:

  • BugTraq Mailing List, Mon Feb 22 2010 - 06:00:41 CST : Hacktics Advisory Feb10: Persistent XSS in Microsoft SharePoint Portal.
  • Microsoft Office SharePoint Server Web site: Microsoft Office SharePoint Server.
  • CVE-2010-0716: _layouts/Upload.aspx in the Documents module in Microsoft SharePoint before 2010 uses URLs with the same hostname and port number for a web site's primary files and individual users' uploaded files (aka attachments), which allows remote authenticated users to leverage same-origin relationships and conduct cross-site scripting (XSS) attacks by uploading TXT files, a related issue to CVE-2008-5026. NOTE: the vendor disputes the significance of this issue, because cross-domain isolation can be implemented when needed.

Platforms Affected:

  • Microsoft SharePoint Server 2007
  • Microsoft Sharepoint Server 2007 SP2
  • Microsoft SharePoint Server 2007 SP1

Reported:

Feb 22, 2010

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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 with the use or spread of this information.

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