Code execution in Insyde SmmResourceCheckDxe driver



| Updated: 2022-02-03
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-33626
CWE-ID CWE-119
Exploitation vector Local
Public exploit N/A
Vulnerable software
 SmmResourceCheckDxe
Hardware solutions / Drivers

Vendor Insyde Software

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU60278

Risk: Low

CVSSv4.0: 5.9 [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-2021-33626

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in SMM (System Management Mode) branch that registers a SWSMI handler. A local user can trigger memory corruption and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SmmResourceCheckDxe: before 5.1: 05.16.23

CPE2.3 External links

https://www.insyde.com/security-pledge/SA-2021001
https://www.insyde.com/security-pledge


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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