Zero-day vulnerability in Microsoft Exchange Server

Server-Side Request Forgery (SSRF)

Vulnerability details

Advisory: SB2022093001 - Remote code execution in Microsoft Exchange Server

Vulnerable component: Microsoft Exchange Server

CVE-ID: CVE-2022-41040

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N/E:H/RL:O/RC:C

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)


The disclosed vulnerability allows a remote user to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input within the Exchange OWA  Autodiscover service.. A remote user can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker to execute arbitrary code on the target system.

Note, the vulnerability is being actively exploited in the wild.

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