PT-2022-23003 · Insyde · Insydeh2O

Published 2022-09-21 · Updated 2022-09-26 · CVE-2022-35895

Positive Technologies (AI Summary)

CVSS v3.1

8.2

High

Base vector

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

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

Description An issue was discovered in the FwBlockSericceSmm driver, which does not properly validate input parameters for a software SMI routine. This leads to memory corruption of arbitrary addresses, including SMRAM, and possible arbitrary code execution.

Recommendations For versions 5.0 through 5.5, consider disabling the FwBlockSericceSmm driver as a temporary workaround until a patch is available. Restrict access to the software SMI routine to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2022-35895

Affected Products

Insydeh2O

References · 6

• 🔥 https://binarly.io/advisories/BRLY-2022-024/index.html · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-35895 · Security Note
• https://insyde.com/security-pledge/SA-2022033 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-35895 · Vendor Advisory
• https://insyde.com/security-pledge · Vendor Advisory
• https://t.me/cibsecurity/50243 · Telegram Post