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Vulnerability Alert

Microsoft SharePoint Buffer Overflow Denial of Service Vulnerability

 
Threat Type:CWE-399: Resource Management Errors
IntelliShield ID:28471
Version:1
First Published:2013 March 12 17:35 GMT
Last Published:2013 March 12 17:35 GMT
Port: Not available
CVE:CVE-2013-0085
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 Applied Mitigation BulletinView related Event Response
 
 
Version Summary:Microsoft SharePoint contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition. Updates are available.
 
 
Description
Microsoft SharePoint contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.

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 specially crafted URL on an affected system. When processed, the crafted URL could trigger a buffer overflow condition, which could terminate the affected application, resulting in a DoS condition.

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.

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 cause the W3WP process running on the affected application to terminate, causing the SharePoint site, and any other sites running under that process, to become unavailable until the process is restarted, which could result in a DoS condition.
 
Technical Information
The vulnerability is due to insufficient validation of user-supplied input processed by the affected software. The processing of a specially crafted URL could cause the W3WP process on the affected application to terminate, resulting in a DoS condition.

An unauthenticated, remote attacker could exploit this vulnerability by convincing a targeted user to follow a specially crafted URL on an affected system. When processed, the crafted URL could trigger a buffer overflow condition which could terminate the affected application, resulting in a DoS condition.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Users should verify that unsolicited links are safe to follow.

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.
 
Alert History
 
Initial Release


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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