Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2023-35818

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
17/07/2023
Last modified:
28/07/2023

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.

Impact

Vector 3.x
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Physical
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
6.80
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:espressif:esp32-d0wd-v3_firmware:3.0:*:*:*:*:*:*:*
cpe:2.3:o:espressif:esp32-d0wd-v3_firmware:3.1:*:*:*:*:*:*:*
cpe:2.3:h:espressif:esp32-d0wd-v3:-:*:*:*:*:*:*:*
cpe:2.3:o:espressif:esp32-d0wdr2-v3_firmware:3.0:*:*:*:*:*:*:*
cpe:2.3:o:espressif:esp32-d0wdr2-v3_firmware:3.1:*:*:*:*:*:*:*
cpe:2.3:h:espressif:esp32-d0wdr2-v3:-:*:*:*:*:*:*:*
cpe:2.3:o:espressif:esp32-u4wdh_firmware:3.0:*:*:*:*:*:*:*
cpe:2.3:o:espressif:esp32-u4wdh_firmware:3.1:*:*:*:*:*:*:*
cpe:2.3:h:espressif:esp32-u4wdh:-:*:*:*:*:*:*:*
cpe:2.3:o:espressif:esp32-pico-v3_firmware:3.0:*:*:*:*:*:*:*
cpe:2.3:o:espressif:esp32-pico-v3_firmware:3.1:*:*:*:*:*:*:*
cpe:2.3:h:espressif:esp32-pico-v3:-:*:*:*:*:*:*:*
cpe:2.3:o:espressif:esp32-pico-v3-02_firmware:3.0:*:*:*:*:*:*:*
cpe:2.3:o:espressif:esp32-pico-v3-02_firmware:3.1:*:*:*:*:*:*:*
cpe:2.3:h:espressif:esp32-pico-v3-02:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools