Ticket #8141 (new defect)
Clipboard sharing between 3 machines / security issue?
|Reported by:||adyroman||Owned by:|
|Version:||VirtualBox 4.0.2||Keywords:||sharing rdp|
I've recently run into a scenario that is a bit troubling. I have two desktop Ubuntu Lucid machines, let's call them D1 and D2, and two users working on them, U1 on D1 and U2 on D2. U1 has VirtualBox running a Windows VM (V1) with D1 as a host. User U2 has a RDP connection opened to V1.
The users U1 and U2, however, have different TS sessions on the Windows machine. So U1 sees his Windows desktop in the VirtualBox window on his desktop D1, and U2 sees his Windows desktop in the rdesktop window on his desktop D2. The Windows VM runs two user sessions concurrently.
Every once in a while, when U2 copies something in the clipboard on his desktop session on D2, user U1 is able to paste the same thing on his desktop session on D1.
I believe the reason for this is because there is clipboard sharing between D1 and V1 via VirtualBox, and also between V1 and D2 via RDP. So in fact, the clipboard somehow becomes shared by all 3 machines.
This does not seem to occur when running the VM in headless mode, and both users connecting to it via RDP, which indicates that the problem is more likely in the way VirtualBox manages clipboard sharing rather than rdesktop / RDP.