Input validation error in Insyde Kernel



| Updated: 2023-09-19
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-27373
CWE-ID CWE-20
Exploitation vector Local
Public exploit N/A
Vulnerable software
 InsydeH2O Kernel
Hardware solutions / Firmware

Vendor Insyde Software

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU80876

Risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-27373

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

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

InsydeH2O Kernel: before

CPE2.3 External links

https://www.insyde.com/security-pledge/SA-2023035


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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