Wondering how our pentesters open doors they don’t have access to? The Bypassing Doors blog series will demonstrate easy-to-use tools and techniques that can be utilized to bypass your organization’s interior and exterior doors. In this part 2 post, we will go through a quick overview of the Double Door Tool (DDT).
The DDT is perfect for any exterior crash bar doors that unfortunately have a centerline gap. Without a proper blocking plate or improperly spaced doors, this tool can be very effective in gaining access to a building through double doors.
Double Door Tool – DDT
The images below display the DDT and the type of double doors that it works on, it’s a pretty simple tool that pentesters include in their pentesting toolkit. One would insert the tool between the double doors, then twist the tool to work it against the crash bar handles by maneuvering the tool in different directions. Then apply pressure to push the handle down once the tool is in place – bingo! Access inside is that quick & easy.
Photo of the Double Door Tool (DDT):
Photo of a double, crash bar door the tool could be utilized against:
Below is a video of the DDT in action:
How To Prevent Double Door Bypass
There are multiple prevention options that can be implemented to prevent the Double Door Tool. These options include the following:
Mullion
Install Mullion to prevent the tool from being inserted through space between doors.
Lock Plate
This option is not the preferred way of remediation, but it might inconvenience an attacker.
If you missed part 1 of the bypassing doors series, check out the UTDT post. More physical pentesting tools and overviews are being published soon, so stay tuned for part 3!
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