Privilege escalation in Dell dbutil Driver



Published: 2021-05-05 | Updated: 2023-01-16
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-21551
CWE-ID CWE-284
Exploitation vector Local
Public exploit Vulnerability #1 is being exploited in the wild.
Vulnerable software
Subscribe 		DBUtil
Hardware solutions / Drivers

Vendor Dell

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper access control

EUVDB-ID: #VU52877

Risk: Low

CVSSv3.1: 7.3 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21551

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: Yes

Description

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

The vulnerability exists due to improper access restrictions within the Dell dbutil driver dbutil_2_3.sys. 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

DBUtil: 2.3

External links

http://www.dell.com/support/kbdoc/en-us/000186019/dsa-2021-088-dell-client-platform-security-update-for-dell-driver-insufficient-access-control-vulnerability


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.



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