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K
zdiOliver Lyak (@ly4k_)ZDI-22-1324
HistorySep 29, 2022 - 12:00 a.m.

Microsoft Windows Active Directory Certificate Services Improper Authorization Privilege Escalation Vulnerability

2022-09-2900:00:00
Oliver Lyak (@ly4k_)
www.zerodayinitiative.com
21
vulnerability
privilege escalation
microsoft windows
active directory
certificate services
improper authorization
authentication
crafted data
certificate request
domain controller
stored credentials

EPSS

0.002

Percentile

65.0%

This vulnerability allows network-adjacent attackers to escalate privileges on affected installations of Microsoft Windows Active Directory Certificate Services. Authentication is required to exploit this vulnerability. The specific flaw exists within the issuance of certificates. By including crafted data in a certificate request, an attacker can obtain a certificate that allows the attacker to authenticate to a domain controller with a high level of privilege. An attacker can leverage this vulnerability to escalate privileges and disclose stored credentials, leading to further compromise.