Privilege escalation in Microsoft Windows Graphics Component

1) Use-after-free

EUVDB-ID: #VU27844

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-1135

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the handling of the DirectComposition SetReferenceArrayProperty function in Windows kernel. A local user can run a specially crafted program to trigger a use-after-free error and execute arbitrary code with SYSTEM privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 10 1709 - 10 1909

Windows Server: 2019 - 2019 1909

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1135
http://www.zerodayinitiative.com/advisories/ZDI-20-646/

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.