Cisco WebEx Meetings Server User Enumeration Vulnerability

A vulnerability in the web framework of Cisco WebEx Meetings Server could allow an unauthenticated, remote attacker to enumerate valid user accounts.

The vulnerability is due to improper sanitization of a returned message. An attacker could exploit this vulnerability by sending crafted URL requests to a vulnerable device.

Cisco has confirmed the vulnerability in a security notice; however, software updates are not available.

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.