Advisory Details

September 29th, 2022

Microsoft Windows Active Directory Certificate Services Improper Authorization Privilege Escalation Vulnerability

CVE ID	CVE-2022-34691
CVSS SCORE	8.4, AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Windows
VULNERABILITY DETAILS	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.
ADDITIONAL DETAILS	Microsoft has issued an update to correct this vulnerability. More details can be found at: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-34691
DISCLOSURE TIMELINE	2022-02-04 - Vulnerability reported to vendor 2022-09-29 - Coordinated public release of advisory
CREDIT	Oliver Lyak (@ly4k_)

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