Denial of Service Vulnerability in Espressif ESP-IDF Bluetooth Classic Implementation
CVE-2021-28135

6.5MEDIUM

Key Information:

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

Summary

The Bluetooth Classic component in Espressif's ESP-IDF framework prior to version 4.4 is susceptible to a denial of service attack. This vulnerability allows an attacker within radio range to exploit the system by sending a continuous stream of unsolicited Link Management Protocol (LMP) responses. When the target device is overwhelmed with LMP Feature Response data, it may result in a crash, effectively disrupting the intended functionality of 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-2021-28135 : Denial of Service Vulnerability in Espressif ESP-IDF Bluetooth Classic Implementation | SecurityVulnerability.io