Vulnerability · Published Sep 23, 2022 · Assigned by mitre
CVE-2022-36338
High 8.2
In plain English
A high-severity security flaw in the affected software. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).
Severity (CVSS 3.1)8.2High
Exploit odds (30 days)0.5%top 59.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
References
- https://www.insyde.com/security-pledge x_refsource_MISC
- https://binarly.io/advisories/BRLY-2022-017/index.html x_refsource_MISC
- https://www.insyde.com/security-pledge/SA-2022029 x_refsource_MISC