Buffer overflow in Insyde Insydeh2o
CVE-2023-22613
An issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. It is possible to write to an attacker-controlled address. An attacker could invoke an SMI handler with a malformed pointer in RCX that overlaps SMRAM, resulting in SMM memory corruption.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (10.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 10.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Insyde Insydeh2o — versions 05.27.37, 05.36.37, 05.44.45
Weakness classification (CWE)
References
- www.insyde.com/security-pledge (Vendor Advisory)
- research.nccgroup.com/2023/04/11/stepping-insyde-system-management-mode/ (Not Applicable)
- www.insyde.com/security-pledge/SA-2023023 (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-22613?
- CVE-2023-22613 is a high-severity vulnerability in Insyde Insydeh2o, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2023-04-11.
- How severe is CVE-2023-22613?
- High severity. CVSS v3 base score is 8.8 out of 10.