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Vulnerability Alert

Microsoft SharePoint Directory Traversal Information Disclosure Vulnerability

 
Threat Type:CWE-22: Path Traversal
IntelliShield ID:28470
Version:4
First Published:2013 March 12 17:15 GMT
Last Published:2013 April 12 19:17 GMT
Port: Not available
CVE:CVE-2013-0084
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:4.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:3.2
Related Resources:
View related IPS SignatureView related Applied Mitigation BulletinView related Event Response
 
 
Version Summary:IntelliShield has updated this alert to indicate no further reports of intrusion prevention system signature activity related to the Microsoft SharePoint directory traversal information disclosure vulnerability.
 
 
Description
Microsoft SharePoint contains a vulnerability that could allow an unauthenticated, remote attacker to conduct directory traversal attacks.

The vulnerability is due to insufficient validation of user-supplied input. An unauthenticated, remote attacker could exploit this vulnerability by convincing a targeted user to follow a crafted URL. If successful, the attacker could launch directory traversal attacks on the targeted server and access sensitive information from arbitrary files on the system. The attacker could use the information to elevate privileges on the device, which could be used to conduct further attacks.

Microsoft has confirmed the vulnerability in a security bulletin and released software updates.
 
Warning Indicators
The following Microsoft products are affected:
  • Microsoft SharePoint Server 2010 SP1
  • Microsoft SharePoint Foundation 2010 SP1
 
IntelliShield Analysis
To exploit the vulnerability, the attacker may provide a link that directs a user to a malicious site and use misleading language or instructions to persuade the user to follow the provided link.

Microsoft has corrected this vulnerability by modifying the way Microsoft SharePoint validates URLs.

Event data from Cisco Remote Management Services has detected intrusion prevention system signature activity related to this vulnerability. The data captured on March 20, 2013, indicates that exploitation of this vulnerability could have occurred in the wild. However, as of April 11, 2013, signature activity is no longer occurring.

The Cisco Applied Intelligence team has created an Applied Mitigation Bulletin to address vulnerabilities that Microsoft disclosed in the March 2013 security bulletin release. This Cisco bulletin, which assists administrators in identifying or mitigating these vulnerabilities using Cisco devices, is available at the following link: Cisco Applied Mitigation Bulletin: Microsoft Security Bulletin Release for March 2013
 
Vendor Announcements
Microsoft has released a security bulletin at the following link: MS13-024
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to launch directory traversal attacks on the targeted server and access sensitive information from arbitrary files on the system. An attacker could use the information to elevate privileges on the affected device, which could be used to conduct further attacks.
 
Technical Information
The vulnerability is due to insufficient validation of user-supplied input processed by the affected software.

An unauthenticated, remote attacker could exploit this vulnerability by convincing a targeted user to follow a crafted URL on an affected system. If successful, the attacker could conduct directory traversal attacks that the attacker could use to gain unauthorized access to sensitive information on the system. The attacker could use the information to elevate privileges or conduct further attacks on an affected device.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Users are advised not to open e-mail messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in e-mail messages are safe, they are advised not to open them.

Administrators may consider using the Microsoft Baseline Security Analyzer (MBSA) scan tool to identify common security misconfigurations and missing security updates on system endpoints.

Administrators are advised to monitor affected systems.
 
Patches/Software
Microsoft customers can obtain updates directly by using the links in the security bulletin. These updates are also distributed by Windows automatic update features and available on the Microsoft Update service. Microsoft Windows Server Update Services (WSUS), Systems Management Server, and System Center Configuration Manager can assist administrators in deploying software updates.

Signatures
 
Cisco Intrusion Prevention System (IPS) 6.0
Signature IDSignature NameReleaseLatest Release Date
2036/0Microsoft SharePoint Elevation of PrivilegeS7022013 Mar 13 
 
Alert History
 

Version 3, March 21, 2013, 4:57 PM: IntelliShield has updated this alert due to increased reports of intrusion prevention system activity related to the Microsoft SharePoint directory traversal information disclosure vulnerability.

Version 2, March 18, 2013, 5:35 AM: IntelliShield has updated this alert to report an increase in intrusion prevention system activity that is related to the Microsoft SharePoint directory traversal information disclosure vulnerability.

Version 1, March 12, 2013, 9:15 AM: Microsoft SharePoint contains a vulnerability that could allow an unauthenticated, remote attacker to conduct directory traversal attacks. Updates are available.


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
Microsoft, Inc.Office SharePoint Server 2010 SP1
Microsoft, Inc.SharePoint Foundation 2010 SP1

Associated Products:
N/A




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The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
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