CVE-2013-0083

Vulnerability

This cross-site scripting (XSS) vulnerability exists in Microsoft SharePoint Server 2010 SP1 [1]. An attacker can inject arbitrary web script or HTML through specially crafted content that is not properly sanitized by the server [1]. All supported editions of Microsoft SharePoint Server 2010 SP1 are affected [1].

Exploitation

An attacker must craft a malicious URL or content that, when clicked or viewed by a target user on a SharePoint site, triggers the XSS. The attacker does not need prior authentication; the victim must interact with the crafted link or content. The flaw is triggered through insufficient input validation [1].

Impact

Successful exploitation allows the attacker to execute arbitrary script in the context of the SharePoint site, potentially leading to administrative command execution. This could result in elevation of privilege, information disclosure, or unauthorized actions on the SharePoint server [1][2].

Mitigation

Microsoft released security update MS13-024 in March 2013 to address this vulnerability, rated Critical for SharePoint Server 2010 [1]. Administrators should apply the update via Microsoft Update or manually. No workarounds are documented; no KEV listing is noted.