Vulnerability · Published Sep 7, 2021 · Assigned by mitre
CVE-2021-28136
Medium 6.5
In plain English
A medium-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 0.8% (higher than 58% of all known vulnerabilities).
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)0.8%top 41.8% 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 handle the reception of multiple LMP IO Capability Request packets during the pairing process, allowing attackers in radio range to trigger memory corruption (and consequently a crash) in ESP32 via a replayed (duplicated) LMP packet.
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