CVE-2022-24893: Espressif Bluetooth Mesh Stack Vulnerable to Out-of-bounds Write leading to memory buffer corruption
ESP-IDF is the official development framework for Espressif SoCs. In Espressif’s Bluetooth Mesh SDK (ESP-BLE-MESH), a memory corruption vulnerability can be triggered during provisioning, because there is no check for the SegN field of the Transaction Start PDU. This can result in memory corruption related attacks and potentially attacker gaining control of the entire system. Patch commits are available on the 4.1, 4.2, 4.3 and 4.4 branches and users are recommended to upgrade. The upgrade is applicable for all applications and users of ESP-BLE-MESH component from ESP-IDF. As it is implemented in the Bluetooth Mesh stack, there is no workaround for the user to fix the application layer without upgrading the underlying firmware.
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Frequently Asked Questions
What is CVE-2022-24893?
CVE-2022-24893 is a memory corruption vulnerability in ESP-IDF, the official development framework for Espressif SoCs.
How does the vulnerability in ESP-IDF occur?
The vulnerability in ESP-IDF occurs due to the lack of a check for the `SegN` field of the Transaction Start PDU in Espressif's Bluetooth Mesh SDK (`ESP-BLE-MESH`).
What is the severity of CVE-2022-24893?
The severity of CVE-2022-24893 is high with a CVSS score of 8.8.
Which versions of ESP-IDF are affected by CVE-2022-24893?
ESP-IDF versions 4.1.3, 4.2.3, 4.3.2, and 4.4.1 are affected by CVE-2022-24893.
How do I fix CVE-2022-24893?
To fix CVE-2022-24893, it is recommended to update to a patched version of ESP-IDF from the official Espressif website.