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  3. Microsoft SharePoint CVE-2013-0084 Directory Traversal Vulnerability

Microsoft SharePoint CVE-2013-0084 Directory Traversal Vulnerability

Risk

High

Date Discovered

March 12, 2013

Description

Microsoft SharePoint is prone to a directory-traversal vulnerability because it fails to sufficiently sanitize user-supplied data. A remote attacker could exploit this vulnerability using directory-traversal strings (such as '../') to obtain sensitive information or elevate their privileges. This could help the attacker launch further attacks.

Technologies Affected

  • Microsoft SharePoint Foundation 2010 SP1
  • Microsoft SharePoint Server 2010 SP1

Recommendations

Block external access at the network boundary, unless external parties require service.

If global access isn't needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of successful exploits.

Disallow anonymous access to services. Permit access for trusted individuals only.

Allow access to services to trusted and accountable individuals only.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.

Deploy NIDS to detect and block attacks and anomalous activity such as requests containing suspicious URI sequences. Since the webserver may log such requests, review its logs regularly.

Run all software as a nonprivileged user with minimal access rights.

Running server processes within a restricted environment using facilities such as chroot or jail may limit the consequences of successful exploits.
Updates are available. Please see the references or vendor advisory for more information.

Credits

Moritz Jodeit of n.runs AG
Copyright © Symantec Corporation.
Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Security Response. Reprinting the whole or part of this alert in any medium other than electronically requires permission from secure@symantec.com.

Disclaimer
The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.
Symantec, Symantec products, Symantec Security Response, and secure@symantec.com are registered trademarks of Symantec Corp. and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners.

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