Information disclosure in Microsoft Exchange Server - CVE-2023-36777
Published: September 12, 2023 / Updated: September 14, 2023
Vulnerability identifier: #VU80668
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-36777
CWE-ID: CWE-200
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to gain access to potentially sensitive information.
The vulnerability exists due to insecure deserialization within the ProjectInstance class. A remote user on the local network can gain unauthorized access to sensitive information on the system.
Affected software
Microsoft Exchange Server
How to mitigate CVE-2023-36777
Install updates from vendor's website.
Microsoft Exchange Server - addressed in versions 2016 CU23 Aug23SUv2 15.01.2507.032, 2019 CU12 Sep23SU 15.02.1118.037, 2019 CU13 Aug23SUv2 15.02.1258.025
External References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-36777
- https://techcommunity.microsoft.com/t5/exchange-team-blog/released-august-2023-exchange-server-security-updates/ba-p/3892811
- https://www.zerodayinitiative.com/advisories/ZDI-23-1418/
- https://www.zerodayinitiative.com/advisories/ZDI-23-1417/