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Vulnerability DatabaseCVE-2023-36757
CVE-2023-36757:
vulnerability analysis and mitigation
Overview
Microsoft Exchange Server Spoofing Vulnerability (CVE-2023-36757) was disclosed as part of Microsoft's security updates. The vulnerability affects Microsoft Exchange Server 2016 (Cumulative Update 23) and Exchange Server 2019 (Cumulative Update 12 and 13) (NVD).
Technical details
The vulnerability has been assigned a CVSS v3.1 Base Score of 8.0 HIGH with the vector string CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Microsoft has classified this as a deserialization of untrusted data vulnerability (CWE-502) (NVD, ZDI).
Impact
The specific flaw exists within the lack of protection against deserialization of the ExFileLog class. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data (ZDI).
Mitigation and workarounds
Microsoft has released security updates to address this vulnerability. The fixes are available through the August 2023 security update (KB5030524) for affected versions of Exchange Server (Microsoft Support).
Additional resources
Source: This report was generated using AI
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