microsoft / microsoft/CSS-Exchange

microsoft-exchange-client-access-server-information-disclosure

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#2,056 3 comments 0 reactions 1 assignee View on GitHub

@lusassl-msft is already working on this.

Since Apr 9, 2024.

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Description

Hi

Synopsis
The remote mail server is affected by an information disclosure vulnerability.

Description
The Microsoft Exchange Client Access Server (CAS) is affected by an information disclosure vulnerability. A remote, unauthenticated attacker can exploit this vulnerability to learn the server's internal IP address.
An attacker can send a crafted GET request to the Web Server with an empty host header that would expose internal IP Addresses of the underlying system in the header response.

Please add capability to check url write rule for hiding server internal ip as explained below.

https://www.cyberis.com/article/microsoft-exchange-client-access-server-information-disclosure

Thanks

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