#VU70912 Man-in-the-Middle (MitM) attack in Microsoft Exchange Server - CVE-2023-21762
Published: January 10, 2023
Vulnerability identifier: #VU70912
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-21762
CWE-ID: CWE-300
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerable software:
Microsoft Exchange Server
Microsoft Exchange Server
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a remote user to perform MitM attack.
The vulnerability exists due to unspecified error. A remote user on the local network can perform spoofing attack and obtain NTLM hashes of other Exchange users.
Remediation
Install updates from vendor's website.