PT-2023-18586 · Insyde · Insydeh2O

Jeremy Boone + 1 · Published 2023-04-11 · Updated 2025-02-11 · CVE-2023-22613

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Insyde InsydeH2O with kernel versions 5.0 through 5.5

Description An issue was discovered in IhisiSmm that allows writing to an attacker-controlled address. This can be achieved by invoking an SMI handler with a malformed pointer in RCX that overlaps SMRAM, resulting in SMM memory corruption.

Recommendations For versions 5.0 through 5.5, consider disabling the SMI handler invocation with a malformed pointer in RCX to minimize the risk of SMM memory corruption until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2023-22613

Affected Products

Insydeh2O

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2023-22613 · Security Note
• https://insyde.com/security-pledge · Vendor Advisory
• https://insyde.com/security-pledge/SA-2023023 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2023-22613 · Vendor Advisory
• https://t.me/cvenotify/110935 · Telegram Post
• https://t.me/cvenotify/49099 · Telegram Post
• https://t.me/cibsecurity/61959 · Telegram Post
• https://research.nccgroup.com/2023/04/11/stepping-insyde-system-management-mode · Note