#VU65177 Use-after-free in Windows and Windows Server - CVE-2022-22034
Published: July 12, 2022 / Updated: July 13, 2022
Vulnerability identifier: #VU65177
Vulnerability risk: Low
CVSSv4.0: 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-2022-22034
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Windows
Windows Server
Windows
Windows Server
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in multiple methods within the win32kfull driver in Microsoft Windows. A local user can run a specially crafted program to trigger a use-after-free error and execute arbitrary code with SYSTEM privileges.
List of vulnerable methods:
- UMPDDrvStretchBltROP
- UMPDDrvAlphaBlend
- UMPDDrvCopyBits
- UMPDDrvStretchBlt
- UMPDDrvPlgBlt
- UMPDDrvTransparentBlt
- UMPDDrvBitBlt
- UMPDDrvStrokePath
- UMPDDrvGradientFill
- UMPDDrvTextOut
Remediation
Install updates from vendor's website.
External links
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-22034
- https://www.zerodayinitiative.com/advisories/ZDI-22-978/
- https://www.zerodayinitiative.com/advisories/ZDI-22-977/
- https://www.zerodayinitiative.com/advisories/ZDI-22-976/
- https://www.zerodayinitiative.com/advisories/ZDI-22-975/
- https://www.zerodayinitiative.com/advisories/ZDI-22-974/
- https://www.zerodayinitiative.com/advisories/ZDI-22-973/
- https://www.zerodayinitiative.com/advisories/ZDI-22-972/
- https://www.zerodayinitiative.com/advisories/ZDI-22-971/
- https://www.zerodayinitiative.com/advisories/ZDI-22-970/
- https://www.zerodayinitiative.com/advisories/ZDI-22-969/