PT-2022-20308 · Insyde · Insydeh2O Uefi Firmware

Published 2022-11-14 · Updated 2025-04-30 · CVE-2022-30774

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: 05.27.29 InsydeH2O UEFI firmware versions prior to Kernel 5.3: 05.36.25 InsydeH2O UEFI firmware versions prior to Kernel 5.4: 05.44.25 InsydeH2O UEFI firmware versions prior to Kernel 5.5: 05.52.25

Description The issue allows DMA attacks on the parameter buffer used by the PnpSmm driver, enabling changes to the contents after parameter values have been checked but before they are used, which is a Time-of-Check-to-Time-of-Use (TOCTOU) attack. This was discovered by Insyde engineering during a security review.

Recommendations For versions prior to Kernel 5.2: 05.27.29, update to Kernel 5.2: 05.27.29 or later. For versions prior to Kernel 5.3: 05.36.25, update to Kernel 5.3: 05.36.25 or later. For versions prior to Kernel 5.4: 05.44.25, update to Kernel 5.4: 05.44.25 or later. For versions prior to Kernel 5.5: 05.52.25, update to Kernel 5.5: 05.52.25 or later.

Fix

Time Of Check To Time Of Use

Weakness Enumeration

CWE-367

Related Identifiers

CVE-2022-30774

Affected Products

Insydeh2O Uefi Firmware

References · 6

• https://osv.dev/vulnerability/CVE-2022-30774 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-30774 · Security Note
• https://insyde.com/security-pledge/SA-2022043 · Vendor Advisory
• https://insyde.com/security-pledge · Vendor Advisory
• https://t.me/cvenotify/120389 · Telegram Post
• https://cert-portal.siemens.com/productcert/pdf/ssa-450613.pdf · Note