Open source tool detects videoconferencing equipment vulnerabilities
by Ses Wang - Qualys - Friday, 17 February 2012.
Why release this tool?

As we've seen, the process of detecting ‘auto-answer’ requires a real call to be placed on the videoconferencing equipment. At this time, we think this could be disruptive, possibly causing interruptions or annoyance, so we have provided the option to use auto-tect.py to detect wether 'auto-answer' is enabled manually.

Resolution

Customers can use QualysGuard in conjunction with the auto-detect.py tool to identify videoconferencing systems with 'auto-answer' enabled as follows:
  • Use QualysGuard scanner to find H.323 equipment. For existing scans, this can be achieved by creating a report filtered by service and port. If your existing scans are stale, you can do a selective scan on QID 82023 which lists all TCP services and then create a report filter.
  • Use the tool above to manually confirm if ‘auto-answer’ is enabled.
Once vulnerable videoconferencing systems are identified, QualysGuard and internal processes can be used to manage and reduce the risk of attack to these systems.

This videoconferencing vulnerability, like the printer vulnerability identified in January, is a timely reminder that, while most vulnerability management effort is focused on the core set of servers and end-user devices like PCs, it's important to consider the potential vulnerability of all devices in your network.

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