CVE-2020-13595 Denial of service in n/a

Medium 6.5 Published 31 Aug 2020 Updated 4 Aug 2024

An attacker within radio range can disable the BLE stack on ESP32 devices by sending crafted packets that trigger an assertion failure.

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-2020-13595?

CVE-2020-13595 is a medium-severity denial of service vulnerability in n/a, published on 31 Aug 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The Bluetooth Low Energy (BLE) controller implementation in Espressif ESP-IDF 4.0 through 4.2 (for ESP32 devices) returns the wrong number of completed BLE packets and triggers a reachable assertion on the host stack when receiving a packet with an MIC failure. An attacker within radio range can silently trigger the assertion (which disables the target's BLE stack) by sending a crafted sequence of BLE packets.

Weakness: CWE-617

Which versions are affected by CVE-2020-13595?

It affects 1 product.

Products include Espressif Esp-Idf.

How do I fix CVE-2020-13595?

No fix has been published for CVE-2020-13595 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2020-13595 being exploited?

There is no known exploitation of CVE-2020-13595 in the wild and no public exploit code.

Sources

Also known as GHSA-h45x-9jw8-5x6p.