The test connection functionality in the NetAudit section of Opsview Monitor before 5.3.1 and 5.4.x before 5.4.2 is vulnerable to command injection due to improper sanitization of the rancid_password parameter.
The /etc/init.d/opsview-reporting-module script that runs at boot time in Opsview Monitor before 5.3.1 and 5.4.x before 5.4.2 invokes a file that can be edited by the nagios user, and would allow attackers to elevate their privileges to root after a system restart, hence obtaining full control of the appliance.
The web management console of Opsview Monitor 5.4.x before 5.4.2 provides functionality accessible by an authenticated administrator to test notifications that are triggered under certain configurable events. The value parameter is not properly sanitized, leading to arbitrary command injection with the privileges of the nagios user account.