Vulnerability identifier: #VU80876

Vulnerability risk: Low

CVSSv3.1: 5.6 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-27373

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Insyde Kernel
Operating systems & Components / Operating system

Vendor:

Description

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to insufficient validation of user-supplied input. A local user can tamper with a runtime-accessible EFI variable and cause a dynamic BAR setting to overlap SMRAM.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://www.insyde.com/security-pledge/SA-2023035

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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.