PT-2023-18587 · Insyde · Insydeh2O

Jeremy Boone + 1 · Published 2023-04-12 · Updated 2023-04-20 · CVE-2023-22616

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Insyde InsydeH2O versions 5.2 through 5.5

Description An issue was discovered in Insyde InsydeH2O where the Save State register is not checked before use. The IhisiSmm driver does not check the value of a save state register before use. Due to insufficient input validation, an attacker can corrupt SMRAM.

Recommendations For versions 5.2 through 5.5, as a temporary workaround, consider restricting access to the IhisiSmm driver until a patch is available. Additionally, avoid using the Save State register in sensitive operations until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-610

Related Identifiers

CVE-2023-22616

Affected Products

Insydeh2O

References · 7

• 🔥 https://research.nccgroup.com/2023/04/11/stepping-insyde-system-management-mode · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2023-22616 · Security Note
• https://osv.dev/vulnerability/CVE-2023-22616 · Vendor Advisory
• https://insyde.com/security-pledge/SA-2023022 · Vendor Advisory
• https://insyde.com/security-pledge · Vendor Advisory
• https://t.me/cibsecurity/61970 · Telegram Post
• https://t.me/cvenotify/48111 · Telegram Post