Cisco AsyncOS ISQ XSS Vulnerability

A vulnerability in the web framework of Cisco AsyncOS could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web interface on the affected system. The vulnerability is due to insufficient input validation of several parameters in the IronPort Spam Quarantine web page. An attacker could exploit this vulnerability by persuading a user to access a malicious link. Cisco has confirmed the vulnerability in a security notice and 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 to persuade the user to follow the link. 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 contact the vendor regarding future updates and releases.

Users should verify that unsolicited links are safe to follow.

Administrators are advised to monitor affected systems.