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zdiOliver Lyak (@ly4k_)ZDI-22-1185
HistorySep 06, 2022 - 12:00 a.m.

Microsoft Windows Active Directory Certificate Services Improper Authorization Privilege Escalation Vulnerability

2022-09-0600:00:00
Oliver Lyak (@ly4k_)
www.zerodayinitiative.com
11

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

6.5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

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 as a domain administrator. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code on domain-joined endpoints.

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

6.5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:P/A:P

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