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zdiDA-0x43-Dx4-DA-Hx2-Tx2-TP-S-Q from GTSCZDI-22-1595
HistoryOct 17, 2022 - 12:00 a.m.

Microsoft Exchange Autodiscover Server-Side Request Forgery Privilege Escalation Vulnerability

2022-10-1700:00:00
DA-0x43-Dx4-DA-Hx2-Tx2-TP-S-Q from GTSC
www.zerodayinitiative.com
27
vulnerability
microsoft exchange
autodiscover
server-side
request forgery
privilege escalation
remote attack
authentication
lack of validation
uri
accessing resources
user privileges

0.967 High

EPSS

Percentile

99.7%

This vulnerability allows remote attackers to escalate privileges on affected installations of Microsoft Exchange. Authentication is required to exploit this vulnerability. The specific flaw exists within the Autodiscover service. The issue results from the lack of proper validation of a URI prior to accessing resources. An attacker can leverage this vulnerability to escalate privileges to resources normally protected from the user.