Vulnerability · Published Sep 7, 2021 · Assigned by mitre
CVE-2021-28139
High 8.8
In plain English
A high-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.4% (higher than 73% of all known vulnerabilities).
Severity (CVSS NVD)8.8High
Exploit odds (30 days)1.4%top 27.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
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
- https://dl.packetstormsecurity.net/papers/general/braktooth.pdf x_refsource_MISC