ESP-IDFのESP-TEEに重大な脆弱性、5.5.6で修正
Summary
ESP-IDFのESP-TEEに、通常側のアプリから信頼側のメモリを壊せる脆弱性が見つかりました。ESP32-C5など4種のチップでESP-TEEを使う組織は、版を確認し、5.5系は5.5.6へ更新してください。
AI summary
Produced by SecPulse using an external AI model; it may contain mistakes. Check the original description and references below before acting on it.
ESP-IDFのESP-TEEに、通常側のアプリから信頼側のメモリを壊せる脆弱性が見つかりました。ESP32-C5など4種のチップでESP-TEEを使う組織は、版を確認し、5.5系は5.5.6へ更新してください。
Original description The description as published by the source.
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. From 5.5.5 until 5.5.6, 6.0.4, and 6.1.1, the esp_tee trap entry in esp_tee_vectors_plic.S and esp_tee_vectors_clic.S saves a caller-controlled register frame through the REE-supplied stack pointer before switching to the trusted TEE stack or validating the pointer. A local unprivileged REE application can direct this machine-mode write into TEE-exclusive memory on ESP32-C5, ESP32-C6, ESP32-C61, and ESP32-H2 devices, breaking the REE/TEE isolation boundary and potentially corrupting TEE control-flow data for code execution, denial of service, or system crashes. Both secure-service ecall and interrupt entry paths contain the vulnerable ordering. This issue is fixed in version 5.5.6 and is scheduled to be fixed in versions 6.0.4 and 6.1.1.
Source: CVE.org (CVE Program・cvelistV5) NVD