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
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