This security bulletin contains information about 1 vulnerabilities.
Updated vulnerability description and CWE-ID, added link to ZDI research.
Exploit availability: YesDescription
The vulnerability allows a remote attacker to execute arbitrary on the system.
The vulnerability exists due to an input validation error within the Microsoft Exchange OCP interface when processing VIEWSTATE data. A remote authenticated attacker can send a specially crafted HTTP request to a vulnerable Exchange server and execute arbitrary code on the target system.
Note, this vulnerability is being actively exploited in the wild.
Install updates from vendor's website.Vulnerable software versions
Microsoft Exchange Server: 2013 Cumulative Update 23 15.00.1497.002 - 2019 Cumulative Update 3 15.02.0464.005CPE2.3
Q & A
Can this vulnerability be exploited remotely?
How the attacker can exploit this vulnerability?
Is there known malware, which exploits this vulnerability?