CVE-2021-28139

Description

The Bluetooth Classic implementation in Espressif ESP-IDF 4.4 and earlier does not properly restrict the Feature Page upon reception of an LMP Feature Response Extended packet, allowing attackers in radio range to trigger arbitrary code execution in ESP32 via a crafted Extended Features bitfield payload.

8.8

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.42%

Vendor Advisory espressif.com

Affected: n/a n/a

References

Link	Tags
https://github.com/espressif/esp-idf	third party advisory product
https://github.com/espressif/esp32-bt-lib	third party advisory product
https://www.espressif.com/en/products/socs/esp32	product vendor advisory
https://dl.packetstormsecurity.net/papers/general/braktooth.pdf	third party advisory technical description

Frequently Asked Questions

What is the severity of CVE-2021-28139?: CVE-2021-28139 has been scored as a high severity vulnerability.
How to fix CVE-2021-28139?: To fix CVE-2021-28139, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-28139 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-28139 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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