CVE-2024-28183 – Anti Rollback bypass with physical access and TOCTOU attack

https://notcve.org/view.php?id=CVE-2024-28183

ESP-IDF is the development framework for Espressif SoCs supported on Windows, Linux and macOS. A Time-of-Check to Time-of-Use (TOCTOU) vulnerability was discovered in the implementation of the ESP-IDF bootloader which could allow an attacker with physical access to flash of the device to bypass anti-rollback protection. Anti-rollback prevents rollback to application with security version lower than one programmed in eFuse of chip. This attack can allow to boot past (passive) application partition having lower security version of the same device even in the presence of the flash encryption scheme. The attack requires carefully modifying the flash contents after the anti-rollback checks have been performed by the bootloader (before loading the application). • https://github.com/espressif/esp-idf/commit/3305cb4d235182067936f8e940e6db174e25b4b2 https://github.com/espressif/esp-idf/commit/4c95aa445d4e84f01f86b6f3a552aa299276abf3 https://github.com/espressif/esp-idf/commit/534e3ad1fa68526a5f989fb2163856d6b7cd2c87 https://github.com/espressif/esp-idf/commit/7003f1ef0dffc73c34eb153d1b0710babb078149 https://github.com/espressif/esp-idf/commit/b2cdc0678965790f49afeb6e6b0737cd24433a05 https://github.com/espressif/esp-idf/commit/c33b9e1426121ce8cccf1a94241740be9cff68de https://github.com/espressif/esp-idf/commit/f327ddf6adab0c28d39597578572 • CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition •