#VU54288 Time-of-check Time-of-use (TOCTOU) Race Condition in ESP-IDF - CVE-2021-27926
Published: June 21, 2021 / Updated: January 26, 2022
Vulnerability identifier: #VU54288
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-27926
CWE-ID: CWE-367
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
ESP-IDF
ESP-IDF
Software vendor:
Espressif Systems
Espressif Systems
Description
The vulnerability allows a local user to disable data encryption.
The vulnerability exists due to a potential physical access TOCTOU attack that can be used to remove encrypted partition flag in partition table. A local user can disable encryption and gain access to sensitive information.
Remediation
Install updates from vendor's website.