Deserialization of Untrusted Data in Microsoft Exchange Server - CVE-2023-36439
Published: November 14, 2023
Vulnerability identifier: #VU83064
CSH Severity: Medium
CVSS v4: 8.6 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-36439
CWE-ID: CWE-502
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data. A remote user on the local network can pass specially crafted data to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Microsoft Exchange Server
How to mitigate CVE-2023-36439
Install the November 2023 Security Update and ensure the Serialized Data Signing feature is enabled.
Microsoft Exchange Server - addressed in versions 2016 CU23 Nov23SU 15.01.2507.035, 2019 CU12 Nov23SU 15.02.1118.040, 2019 CU13 Nov23SU 15.02.1258.028