Cisco WebEx Meetings Reflected Cross-Site Scripting Vulnerability

A vulnerability in Cisco WebEx Meetings could allow an unauthenticated, remote attacker to perform reflected cross-site scripting attacks.   The vulnerability is due to insufficient validation of user-supplied input by the affected software. An attacker could exploit this vulnerability by persuading a user to click a crafted URL that is designed to submit malicious code to the affected software. Cisco has confirmed the vulnerability and released software updates. To exploit the vulnerability, the attacker may provide a link to the user and convince the user to follow the link by using misleading language and instructions.

Administrators are advised to apply the appropriate updates.

Users should verify that unsolicited links are safe to follow.

Users are advised not to open email messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in email messages are safe, they are advised not to open them.

For additional information about cross-site scripting attacks and the methods used to exploit these vulnerabilities, see the Cisco Applied Mitigation Bulletin Understanding Cross-Site Scripting (XSS) Threat Vectorhttp://www.cisco.com/c/en/us/support/docs/cmb/cisco-amb-20060922-understanding-xss.htmls .

Administrators are advised to monitor affected systems.