CVE-2021-28136 Memory corruption in n/a
Attackers in radio range can crash ESP32 devices by replaying LMP packets during Bluetooth pairing due to improper handling in the ESP-IDF Bluetooth Classic implementation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-28136?
CVE-2021-28136 is a medium-severity memory corruption vulnerability in n/a, published on 7 Sep 2021. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-787
Which versions are affected by CVE-2021-28136?
It affects 1 product.
Products include Espressif Esp-Idf.
How do I fix CVE-2021-28136?
No fix has been published for CVE-2021-28136 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-28136 being exploited?
There is no known exploitation of CVE-2021-28136 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-w488-94f6-hhmr.