Microsoft SharePoint contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service condition. Updates are available.
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.
The following Microsoft products are affected:
Microsoft SharePoint Server 2010 SP1
Microsoft SharePoint Foundation 2010 SP1
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.
Microsoft has released a security bulletin at the following link: MS13-024
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.
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.
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.
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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