Exploit code released for RCE attack on Citrix VDI solution
Briefly

"This one is a privesc bug yielding system privileges for any VDI user, which is actually a lot worse than it might initially sound since that's system privileges on the server that hosts all the applications and access is 'by design' - allowing an attacker to impersonate any user, including administrators, and monitor behavior, connectivity."
"Since everything is so seamless and portable, it's an easy jump from there to impersonating users or 'shadowing' them, observing their every action. The centralized administration system can easily become a panopticon."
Read at Theregister
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