Input validation error in InsydeH2O Kernel - CVE-2023-27373

Vulnerability identifier: #VU80876

CSH Severity: Low

CVSS v4: 5.8 [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]

CVE-ID: CVE-2023-27373

CWE-ID: CWE-20

Exploitation vector: Local access

Exploit availability: No public exploit available

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.

InsydeH2O Kernel
RUGGEDCOM APE1808CLA-P CC
RUGGEDCOM APE1808W10 CC
RUGGEDCOM APE1808W10
RUGGEDCOM APE1808LNX CC
RUGGEDCOM APE1808LNX
RUGGEDCOM APE1808CLA-S5 CC
RUGGEDCOM APE1808CLA-S5
RUGGEDCOM APE1808CLA-S3 CC
RUGGEDCOM APE1808CLA-S3
RUGGEDCOM APE1808CLA-S1 CC
RUGGEDCOM APE1808CLA-S1
RUGGEDCOM APE1808 ADM
RUGGEDCOM APE1808CLA-P
RUGGEDCOM APE1808 SAM-L CC
RUGGEDCOM APE1808 SAM-L
RUGGEDCOM APE1808 ELAN CC
RUGGEDCOM APE1808 ELAN
RUGGEDCOM APE1808 CLOUDCONNECT CC
RUGGEDCOM APE1808 CLOUDCONNECT
RUGGEDCOM APE1808 CKP CC
RUGGEDCOM APE1808 CKP
RUGGEDCOM APE1808 ADM CC

Install updates from vendor's website.

InsydeH2O Kernel - addressed in versions 5.4 05.42.52.0027, 5.4 05.43.01.0026, 5.4 05.43.12.0057, 5.4 05.44.34.0053, 5.4 05.44.45.0015, 5.4 05.45.02.0028
RUGGEDCOM APE1808CLA-P CC - update to 1.0.212N
RUGGEDCOM APE1808W10 CC - update to 1.0.212N
RUGGEDCOM APE1808W10 - update to 1.0.212N
RUGGEDCOM APE1808LNX CC - update to 1.0.212N
RUGGEDCOM APE1808LNX - update to 1.0.212N
RUGGEDCOM APE1808CLA-S5 CC - update to 1.0.212N
RUGGEDCOM APE1808CLA-S5 - update to 1.0.212N
RUGGEDCOM APE1808CLA-S3 CC - update to 1.0.212N
RUGGEDCOM APE1808CLA-S3 - update to 1.0.212N
RUGGEDCOM APE1808CLA-S1 CC - update to 1.0.212N
RUGGEDCOM APE1808CLA-S1 - update to 1.0.212N
RUGGEDCOM APE1808 ADM - update to 1.0.212N
RUGGEDCOM APE1808CLA-P - update to 1.0.212N
RUGGEDCOM APE1808 SAM-L CC - update to 1.0.212N
RUGGEDCOM APE1808 SAM-L - update to 1.0.212N
RUGGEDCOM APE1808 ELAN CC - update to 1.0.212N
RUGGEDCOM APE1808 ELAN - update to 1.0.212N
RUGGEDCOM APE1808 CLOUDCONNECT CC - update to 1.0.212N
RUGGEDCOM APE1808 CLOUDCONNECT - update to 1.0.212N
RUGGEDCOM APE1808 CKP CC - update to 1.0.212N
RUGGEDCOM APE1808 CKP - update to 1.0.212N
RUGGEDCOM APE1808 ADM CC - update to 1.0.212N

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

• Input validation error in Insyde Kernel
• Multiple vulnerabilities in Siemens RUGGEDCOM APE1808 Product Family