PT-2022-21192 · Insyde · Insydeh2O Uefi Firmware

Published 2022-11-14 · Updated 2022-11-18 · CVE-2022-32267

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions InsydeH2O UEFI firmware versions prior to Kernel 5.2: 05.27.23 InsydeH2O UEFI firmware versions prior to Kernel 5.3: 05.36.23 InsydeH2O UEFI firmware versions prior to Kernel 5.4: 05.44.23 InsydeH2O UEFI firmware versions prior to Kernel 5.5: 05.52.23

Description The issue is related to DMA transactions targeting input buffers used by the SmmResourceCheckDxe software SMI handler, which can cause SMRAM corruption through a Time-of-Check-to-Time-of-Use (TOCTOU) attack. This was discovered by Insyde engineering.

Recommendations For InsydeH2O UEFI firmware version prior to Kernel 5.2: 05.27.23, update to Kernel 5.2: 05.27.23 or later. For InsydeH2O UEFI firmware version prior to Kernel 5.3: 05.36.23, update to Kernel 5.3: 05.36.23 or later. For InsydeH2O UEFI firmware version prior to Kernel 5.4: 05.44.23, update to Kernel 5.4: 05.44.23 or later. For InsydeH2O UEFI firmware version prior to Kernel 5.5: 05.52.23, update to Kernel 5.5: 05.52.23 or later.

Fix

Time Of Check To Time Of Use

Weakness Enumeration

CWE-367

Related Identifiers

CVE-2022-32267

Affected Products

Insydeh2O Uefi Firmware

References · 4

• https://osv.dev/vulnerability/CVE-2022-32267 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-32267 · Security Note
• https://insyde.com/security-pledge/SA-2022046 · Vendor Advisory
• https://insyde.com/security-pledge · Vendor Advisory