ZDI-21-798: Microsoft Exchange Server ECP Authentication Bypass Information Disclosure Vulnerability
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Microsoft Exchange Server. Authentication is not required to exploit this vulnerability. The specific flaw exists within the authentication of requests to web services within the ecp web application. By issuing a crafted request, an attacker can bypass authentication. An attacker can leverage this vulnerability to disclose information from the server.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Exchange |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-21-798?
The severity of ZDI-21-798 is considered critical due to its potential for remote exploitation without authentication.
How do I fix ZDI-21-798?
To address ZDI-21-798, apply the latest security updates provided by Microsoft for Exchange Server.
What systems are affected by ZDI-21-798?
ZDI-21-798 affects various installations of Microsoft Exchange Server.
What type of attack does ZDI-21-798 enable?
ZDI-21-798 enables remote attackers to disclose sensitive information from the affected Microsoft Exchange Server installations.
Is authentication required to exploit ZDI-21-798?
No, authentication is not required to exploit ZDI-21-798, making it particularly dangerous.
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