Raining SYSTEM Shells with Citrix Workspace app

TL;DR Citrix Workspace is vulnerable to a remote command execution attack running under the context of the SYSTEM account. By sending a crafted message over a named pipe and spoofing the client process ID, the Citrix Workspace Updater Service can be tricked into executing an arbitrary process und...

Windows‌ ‌Exploitation‌ ‌Tricks:‌ ‌Spoofing‌ ‌Named‌ ‌Pipe‌ ‌Client‌ ‌PID‌

Posted by James Forshaw, Project Zero While researching the Access Mode Mismatch in IO Manager bug class I came across an interesting feature in named pipes which allows a server to query the connected clients PID. This feature was introduced in Vista and is exposed to servers through the...

Microsoft Windows SMB Server (v1/v2) - Mount Point Arbitrary Device Open Privilege Escalation

Windows: SMB Server v1 and v2 Mount Point Arbitrary Device Open EoP Platform: Windows 10 1703 and 1709 seems the same on 7 and 8.1 but not extensively tested Class: Elevation of Privilege Summary: The SMB server driver srv.sys and srv2.sys don't check the destination of a NTFS mount point when...