ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. Prior to 5.2.8, 5.3.6, 5.5.5, 6.0.3, and 6.1-rc1, ESP-IDF BlueDroid L2CAP configuration-option processing in l2c_main.c and l2c_utils.c does not consistently validate option lengths against the remaining received packet bytes. A remote unauthenticated BR/EDR peer within radio range can send a malformed L2CAP configuration request that causes an out-of-bounds read, and under some runtime conditions limited adjacent Bluetooth stack memory can be included in an outbound L2CAP Configuration Response.
The issue affects ESP32-class products using the BlueDroid host stack with Classic Bluetooth enabled. This issue is fixed in 5.2.8, 5.3.6, 5.5.5, 6.0.3, and 6.1-rc1.
Attack Parameters
Attack Vector
Adjacent
Requires local network access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 13
https://github.com/espressif/esp-idf/commit/14c99559b4337cabcf0f09c21d16b93c4cd…
security-advisories@github.com
https://github.com/espressif/esp-idf/commit/1e07f6d83ca892630a7210df2958455f7ca…
security-advisories@github.com
https://github.com/espressif/esp-idf/commit/5731c63ece128f156939b9f734256e2227c…
security-advisories@github.com
https://github.com/espressif/esp-idf/commit/8de265dc44b1b22c749ea44ee7c609b3da4…
security-advisories@github.com
https://github.com/espressif/esp-idf/commit/9a6d04f65e0e341e7d72bd417c9f31b8a04…
security-advisories@github.com
https://github.com/espressif/esp-idf/commit/c2610255a5adce651ca582bb82368c3dd0e…
security-advisories@github.com
https://github.com/espressif/esp-idf/commit/c8cd8f4f3019ae2f912c8cbe9974445e8d9…
security-advisories@github.com
https://github.com/espressif/esp-idf/releases/tag/v5.2.8
security-advisories@github.com
https://github.com/espressif/esp-idf/releases/tag/v5.3.6
security-advisories@github.com
https://github.com/espressif/esp-idf/releases/tag/v5.5.5
security-advisories@github.com
https://github.com/espressif/esp-idf/releases/tag/v6.0.3
security-advisories@github.com
https://github.com/espressif/esp-idf/releases/tag/v6.1-rc1
security-advisories@github.com
https://github.com/espressif/esp-idf/security/advisories/GHSA-v335-fxwc-rc44
security-advisories@github.com