CVE-2022-36338

 

Published at: - 23-09-2022 08:15

Last modified: - 27-09-2022 07:01

Total changes: - 2

Description

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. An SMM callout vulnerability in the SMM driver FwBlockServiceSmm, creating SMM, leads to arbitrary code execution. An attacker can replace the pointer to the UEFI boot service GetVariable with a pointer to malware, and then generate a software SMI.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://www.insyde.com/security-pledge
• https://www.insyde.com/security-pledge/SA-2022029
• https://binarly.io/advisories/BRLY-2022-017/index.html

 

Keywords

NVD

 

CVE-2022-36338

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures