Privilege escalation in Microsoft Windows Graphics Component

Published: 2023-02-15 | Updated: 2023-02-25

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-21804 CVE-2023-21822
CWE-ID	CWE-119 CWE-416
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	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) Buffer overflow

EUVDB-ID: #VU72227

Risk: Low

CVSSv4.0: 5.9 [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]

CVE-ID: CVE-2023-21804

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error within the XPS document writer feature in Windows Graphics Component. A local user can trigger memory corruption and execute arbitrary code with SYSTEM privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 10 - 11 22H2 10.0.22621.521

Windows Server: 2012 - 2022 20H2

CPE2.3

External links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21804

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) Use-after-free

EUVDB-ID: #VU72226