SB2022080930 - Multiple vulnerabilities in Microsoft Windows Defender Credential Guard
Published: August 9, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 vulnerabilities.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2022-34705)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions in the Windows Defender Credential Guard, which leads to security restrictions bypass and privilege escalation.
2) Security features bypass (CVE-ID: CVE-2022-34709)
CWE-ID: CWE-254 - Security Features
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to bypass authentication process.
The vulnerability exists due to security feature bypass issue in Windows Defender Credential Guard. A local administrator can bypass Kerberos protection used by Defender Credential Guard.
3) Information disclosure (CVE-ID: CVE-2022-34710)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in the Windows Defender Credential Guard. A local user can gain unauthorized access to sensitive information on the system.
4) Information disclosure (CVE-ID: CVE-2022-34712)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in the Windows Defender Credential Guard. A local user can gain unauthorized access to sensitive information on the system.
5) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2022-35771)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions in the Windows Defender Credential Guard, which leads to security restrictions bypass and privilege escalation.
6) Information disclosure (CVE-ID: CVE-2022-34704)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in the Windows Defender Credential Guard. A local user can gain unauthorized access to sensitive information on the system.
Remediation
Install update from vendor's website.
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-34705
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-34709
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-34710
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-34712
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-35771
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-34704