Cisco Hosted Collaboration Solution Unauthorized System Access Vulnerability

A vulnerability in the Simple Object Access Protocol (SOAP) Interface of the Cisco Hosted Collaboration Solution (HCS) could allow an unauthenticated, remote attacker to gain unauthorized access to a targeted system. An attacker could exploit the vulnerability by transmitting crafted Challenge SOAP calls to the system. This could allow the attacker to access system management tools. Cisco has confirmed the vulnerability in a security notice; however, software updates are not available. To exploit this vulnerability, an attacker may need access to trusted, internal networks behind a firewall to send crafted Challenge SOAP calls to the targeted system. This access requirement may reduce the likelihood of a successful exploit. 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.

Administrators are advised to allow only trusted users to have network access.

Administrators can help protect affected systems from external attacks by using a solid firewall strategy.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

Administrators are advised to monitor affected systems.