Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Espressif | Esp-Idf | <= 4.4 |
| Espressif | Esp32 | - |
References
- https://dl.packetstormsecurity.net/papers/general/braktooth.pdfTechnical DescriptionThird Party Advisory
- https://github.com/espressif/esp-idfProductThird Party Advisory
- https://github.com/espressif/esp32-bt-libProductThird Party Advisory
- https://www.espressif.com/en/products/socs/esp32ProductVendor Advisory
- https://dl.packetstormsecurity.net/papers/general/braktooth.pdfTechnical DescriptionThird Party Advisory
- https://github.com/espressif/esp-idfProductThird Party Advisory
- https://github.com/espressif/esp32-bt-libProductThird Party Advisory
- https://www.espressif.com/en/products/socs/esp32ProductVendor Advisory
FAQ
What is CVE-2021-28139?
CVE-2021-28139 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 r...
How severe is CVE-2021-28139?
CVE-2021-28139 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-28139?
Check the references section above for vendor advisories and patch information. Affected products include: Espressif Esp-Idf, Espressif Esp32.