CVE-2019-17391 Security feature bypass in n/a
Physical attackers can bypass secure boot and flash encryption protections on ESP32 chips by glitching the power supply to read protected eFuse keys.
- 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-2019-17391?
CVE-2019-17391 is a medium-severity vulnerability in n/a, published on 14 Nov 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered in the Espressif ESP32 mask ROM code 2016-06-08 0 through 2. Lack of anti-glitch mitigations in the first stage bootloader of the ESP32 chip allows an attacker (with physical access to the device) to read the contents of read-protected eFuses, such as flash encryption and secure boot keys, by injecting a glitch into the power supply of the chip shortly after reset.
Weakness: CWE-755
Which versions are affected by CVE-2019-17391?
It affects 4 products.
Products include Espressif Esp32-D0wd Firmware, Espressif Esp32-D2wd Firmware, Espressif Esp32-Pico-D4 Firmware, Espressif Esp32-S0wd Firmware.
How do I fix CVE-2019-17391?
No fix has been published for CVE-2019-17391 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-17391 being exploited?
There is no known exploitation of CVE-2019-17391 in the wild and no public exploit code.
Sources
Also known as GHSA-6fg6-6393-xqhq.