Bluetooth Classic Vulnerability in Espressif ESP-IDF and ESP32
CVE-2021-28136

6.5MEDIUM

Key Information:

Vendor
Espressif
Status
Esp-idf
Vendor
CVE Published:
7 September 2021

Summary

The Bluetooth Classic implementation in Espressif ESP-IDF versions 4.4 and earlier is susceptible to a vulnerability where it fails to correctly manage the reception of multiple LMP IO Capability Request packets during the pairing process. This flaw enables attackers within radio range to exploit the system by replaying duplicated LMP packets, which can lead to memory corruption and potentially crash devices utilizing the ESP32 chipset.

References

https://github.com/espressif/esp-idf
x_refsource_MISC
https://github.com/espressif/esp32-bt-lib
x_refsource_MISC
https://www.espressif.com/en/products/socs/esp32
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2021-28136 : Bluetooth Classic Vulnerability in Espressif ESP-IDF and ESP32 | SecurityVulnerability.io