CVE-2022-36338

EUVD-2022-39054
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.2 HIGH
LOCAL
LOW
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CISA-ADPADP
8.2 HIGH
LOCAL
LOW
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 32%
Affected Products (NVD)
VendorProductVersion
insydeinsydeh2o
5.0 ≤
𝑥
≤ 5.5
𝑥
= Vulnerable software versions
References
https://binarly.io/advisories/BRLY-2022-017/index.html
https://www.insyde.com/security-pledge
https://www.insyde.com/security-pledge/SA-2022029
https://binarly.io/advisories/BRLY-2022-017/index.html
https://www.insyde.com/security-pledge
https://www.insyde.com/security-pledge/SA-2022029