ESF-IDF Has Out-of-Bounds Write in ESP32 Bluetooth AVRCP Vendor Command Handling

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.1, 5.4.3, 5.3.4, 5.2.6, 5.1.6, and earlier, in the avrc_vendor_msg() function of the ESP-IDF BlueDroid AVRCP stack, the allocated buffer size was validated using AVRC_MIN_CMD_LEN (20 bytes). However, the actual fixed header data written before the vendor payload exceeds this value. This totals 29 bytes written before p_msg->p_vendor_data is copied. Using the old AVRC_MIN_CMD_LEN could allow an out-of-bounds write if vendor_len approaches the buffer limit. For commands where vendor_len is large, the original buffer allocation may be insufficient, causing writes beyond the allocated memory. This can lead to memory corruption, crashes, or other undefined behavior. The overflow could be larger when assertions are disabled.

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跨界内存写

Espressif IoT Development Framework 缓冲区错误漏洞

Espressif IoT Development Framework是Espressif Systems开源的一个物联网开发框架。 Espressif IoT Development Framework 5.5.1版本、5.4.3版本、5.3.4版本、5.2.6版本、5.1.6版本及之前版本存在缓冲区错误漏洞，该漏洞源于AVRCP堆栈中缓冲区大小验证不足，可能导致越界写入和内存损坏。

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