A vulnerability in the FTP server of the Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to log in to the FTP server of the device without a valid password.

The attacker does need to have a valid username.

The vulnerability is due to incorrect FTP user credential validation.

An attacker could exploit this vulnerability by using FTP to connect to the management IP address of the targeted device.

A successful exploit could allow the attacker to log in to the FTP server of the Cisconbsp;WSA without having a valid password.

Cisco has released software updates that address this vulnerability.

There are no workarounds that address this vulnerability.

This advisory is available at the following link:

Security Impact Rating: High

CVE: CVE-2018-0087

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