😈 Microsoft Exchange: OWASSRF + TabShell
(CVE-2022-41076)

The TabShell vulnerability its a form of Privilege Escalation which allows breaking out of the restricted Powershell Sandbox after you have successfully gained access through OWASSRF.

For a detailed write see research:
https://blog.viettelcybersecurity.com/tabshell-owassrf/

PoC:
https://gist.github.com/testanull/518871a2e2057caa2bc9c6ae6634103e

#owa #ssrf #tabshell #poc