Microsoft SharePoint Server contains a vulnerability that could allow an unauthenticated, remote attacker to conduct cross-site scripting attacks. Updates are available.
Microsoft SharePoint Server contains a vulnerability that could allow an unauthenticated, remote attacker to conduct cross-site scripting attacks.
The vulnerability is due to insufficient validation of user-supplied input. An unauthenticated, remote attacker could exploit this vulnerability to execute SharePoint commands in the security context of an affected site. Successful exploitation could allow an attacker to gain elevated privileges which could be leveraged to conduct further attacks, such as stealing sensitive browser-based information, including authentication cookies or recently submitted data, or to take actions on the site as the affected user.
Microsoft has confirmed the vulnerability in a security bulletin and released software updates.
Microsoft SharePoint Server 2010 SP1 is vulnerable.
To exploit this vulnerability, an attacker must convince a user to visit a specially crafted webpage usually only available to SharePoint administrators.
Microsoft has corrected this vulnerability by modifying the way Microsoft SharePoint performs validation and sanitization of user input.
Microsoft has released a security bulletin at the following link: MS13-024
An unauthenticated, remote attacker could exploit this vulnerability to execute SharePoint commands in the security context of the affected site. Successful exploitation could allow an attacker to gain elevated privileges, which could be leveraged to conduct further attacks.
Administrators are advised to apply the appropriate updates.
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.
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.
The security vulnerability applies to the following combinations of products.
Office SharePoint Server
Alerts and bulletins on the Cisco Security Intelligence Operations Portal are highlighted by analysts in the
Cisco Threat Operations Center and represent a subset of the comprehensive content that is available through Cisco Security IntelliShield Alert Manager Service.
This customizable threat and vulnerability alert service provides security staff with access to timely, accurate, and credible information about threats and vulnerabilities that may affect their environment.
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.