Microsoft Exchange CVE-2019-0817 Spoofing Vulnerability

description-logoDescription

A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails to properly handle web requests. An attacker who successfully exploited the vulnerability could perform script or content injection attacks, and attempt to trick the user into disclosing sensitive information. An attacker could also redirect the user to a malicious website that could spoof content or the vulnerability could be used as a pivot to chain an attack with other vulnerabilities in web services. To exploit the vulnerability, an attacker could send a specially crafted email containing a malicious link to a user. An attacker could also use a chat client to social engineer a user into clicking the malicious link. However, in both examples the user must click the malicious link. The security update addresses the vulnerability by correcting how OWA validates web requests.

affected-products-logoAffected Applications

Microsoft Exchange Server 2016 Cumulative Update 11
Microsoft Exchange Server 2013 Cumulative Update 22
Microsoft Exchange Server 2016 Cumulative Update 12
Microsoft Exchange Server 2019 Cumulative Update 1
Microsoft Exchange Server 2019
Microsoft Exchange Server 2010 Service Pack 3

CVE References

CVE-2019-0817