Privilege escalation in Windows Block Level Backup Engine Service

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU27856

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-2020-1010

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

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

The vulnerability exists due to the Windows Block Level Backup Engine Service (wbengine) allows file deletion in arbitrary locations. A local user can run a specially crafted program to execute arbitrary code on the system with elevated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows: 7 - 10 1909

Windows Server: 2008 R2 - 2019 1909

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1010

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.