High severity · published Apr 11, 2023
CVE-2023-22613
An issue was discovered in IhisiSmm in Insyde InsydeH2O with kernel 5.0 through 5.5
8.8
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 11% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IN
Insydeh2o · Insyde
05.27.37; 05.36.37; 05.44.45; 05.52.45 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-22613
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-22613
Not Applicable
https://research.nccgroup.com/2023/04/11/stepping-insyde-system-management-mode/
Vendor Advisory
https://www.insyde.com/security-pledge
Vendor Advisory
https://www.insyde.com/security-pledge/SA-2023023
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