Privilege escalation in Insyde HddPassword driver



Published: 2022-02-03
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-43615
CWE-ID CWE-264
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		HddPassword
Hardware solutions / Drivers

Vendor

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU60273

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-43615

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to SMM callout issue. A remote attacker can hijack execution flow of a code running in System Management Mode and escalate privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

HddPassword: before 5.3: 05.32.22

External links

http://www.insyde.com/security-pledge/SA-2022013


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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