Multiple vulnerabilities in Microsoft Windows Overlay Filter
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2023-21767 CVE-2023-21766 |
| CWE-ID | CWE-264 CWE-362 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Windows Operating systems & Components / Operating system Windows Server Operating systems & Components / Operating system |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU70911
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-21767
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions in Windows Overlay Filter, which leads to security restrictions bypass and privilege escalation.
MitigationInstall updates from vendor's website.
Vulnerable software versionsWindows: 8.1 - 11 22H2 10.0.22621.521
Windows Server: 2012 R2 - 2022 10.0.20348.202
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21767
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Race condition
EUVDB-ID: #VU70914
Risk: Low
CVSSv3.1: 4.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-21766
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to a race condition in Windows Overlay. A local user can exploit the race and gain unauthorized access to sensitive information on the system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsWindows: 10 - 11 22H2 10.0.22621.521
Windows Server: 2016 10.0.14393.10 - 2022 10.0.20348.202
External linkshttp://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2023-21766
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
