CVE-2023-35818 Security feature bypass in n/a
Attackers can use electromagnetic fault injection to bypass secure boot and flash encryption, enabling cleartext data extraction or code execution on ESP32 devices.
- 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-2023-35818?
CVE-2023-35818 is a medium-severity vulnerability in n/a, published on 17 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An issue was discovered on Espressif ESP32 3.0 (ESP32_rev300 ROM) devices. An EMFI attack on ECO3 provides the attacker with a capability to influence the PC value at the CPU context level, regardless of Secure Boot and Flash Encryption status. By using this capability, the attacker can exploit another behavior in the chip to gain unauthorized access to the ROM download mode. Access to ROM download mode may be further exploited to read the encrypted flash content in cleartext format or execute stub code.
Which versions are affected by CVE-2023-35818?
It affects 22 products.
Products include Espressif Esp-Eye Firmware, Espressif Esp32-D0wd-V3 Firmware, Espressif Esp32-D0wdr2-V3 Firmware, Espressif Esp32-Devkitc Firmware, Espressif Esp32-Devkitm-1 Firmware, Espressif Esp32-Mini-1 Firmware and 16 more.
How do I fix CVE-2023-35818?
No fix has been published for CVE-2023-35818 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-35818 being exploited?
There is no known exploitation of CVE-2023-35818 in the wild and no public exploit code.
Sources
Also known as GHSA-hfvv-rq2c-v7xq.