CVE-2020-13595

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.11%
Third-Party Advisory github.io Third-Party Advisory github.io Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://asset-group.github.io/disclosures/sweyntooth/ third party advisory
https://asset-group.github.io/cves.html third party advisory
https://github.com/espressif/esp32-bt-lib third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-13595?
CVE-2020-13595 has been scored as a medium severity vulnerability.
How to fix CVE-2020-13595?
To fix CVE-2020-13595, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-13595 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-13595 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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