Cisco Unified Computing System Central Software DOM-Based Cross-Site Scripting Vulnerability

Cisco Unified Computing System Central Software contains a vulnerability that could allow an unauthenticated, remote attacker to conduct cross-site scripting attacks. The vulnerability exists because the affected software fails to perform sufficient validation and sanitation of user-supplied input when processing crafted URLs. An unauthenticated, remote attacker could exploit the vulnerability by convincing a user to follow a malicious link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected site and allow the attacker to access sensitive browser-based information. Cisco has confirmed the vulnerability in a security notice and has released software updates. To exploit the vulnerability, the attacker may provide a link that directs a user to a malicious site and use misleading language or instructions in an attempt to persuade a user to follow the malicious link. For additional information about cross-site scripting attacks and potential methods of mitigation, see the Cisco Applied Mitigation Bulletin Understanding Cross-Site Scripting (XSS) Threat Vectors. Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.

Administrators are advised to apply the appropriate updates.

Users should verify that unsolicited links are safe to follow.

Users are advised not to visit websites or follow links that have suspicious characteristics or cannot be verified as safe.

Administrators are advised to monitor affected systems.