VulnerabilityModified

CVE-2023-35818

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.

MEDIUM 6.8EPSS 0.22%

Does this matter?

Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1: 6.8 MEDIUMCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.22% probability · 13th percentile
CISA KEV: Not listed
Affected: espressif/esp32-d0wd-v3 firmware · espressif/esp32-d0wdr2-v3 firmware · espressif/esp32-u4wdh firmware · espressif/esp32-pico-v3 firmware · espressif/esp32-pico-v3-02 firmware · espressif/esp32-pico-d4 firmware · espressif/esp32-wroom-32e firmware · espressif/esp32-wroom-32ue firmware · espressif/esp32-wroom-da firmware · espressif/esp32-wrover-e firmware · espressif/esp32-wrover-ie firmware · espressif/esp32-mini-1 firmware · espressif/esp32-mini-1u firmware · espressif/esp32-pico-mini-02 firmware · espressif/esp32-pico-mini-02u firmware · espressif/esp32-pico-v3-zero firmware · espressif/esp32-devkitc firmware · espressif/esp32-devkitm-1 firmware · espressif/esp32-pico-kit firmware · espressif/esp32-pico-v3-zero-devkit firmware · +2 more
Source: cve@mitre.org

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.