Time-of-check Time-of-use (TOCTOU) Race Condition in Insyde Kernel



| Updated: 2023-09-18
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-32477
CWE-ID CWE-367
Exploitation vector Local
Public exploit N/A
Vulnerable software
 InsydeH2O Kernel
Hardware solutions / Firmware

Vendor Insyde Software

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Time-of-check Time-of-use (TOCTOU) Race Condition

EUVDB-ID: #VU80862

Risk: Low

CVSSv4.0: 4.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-32477

CWE-ID: CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a time-of-check, time-of-use (TOCTOU) race condition in InsydeH2O. A local user can gain elevated privileges on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

InsydeH2O Kernel: before

CPE2.3 External links

https://www.insyde.com/security-pledge
https://www.insyde.com/security-pledge/SA-2023009


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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