Lucene search

K
zdiOliver Lyak (@ly4k_) of Institut For Cyber RiskZDI-22-729
HistoryMay 10, 2022 - 12:00 a.m.

Microsoft Windows Active Directory Certificate Services Improper Authorization Privilege Escalation Vulnerability

2022-05-1000:00:00
Oliver Lyak (@ly4k_) of Institut For Cyber Risk
www.zerodayinitiative.com
76

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

9 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.071 Low

EPSS

Percentile

94.0%

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.

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

9 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.071 Low

EPSS

Percentile

94.0%