CVE-2023-35818

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.

6.8

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.13%

Vendor Advisory espressif.com

Affected: n/a n/a

References

Link	Tags
https://espressif.com	product
https://www.espressif.com/sites/default/files/advisory_downloads/AR2023-005%20Security%20Advisory%20Concerning%20Bypassing%20Secure%20Boot%20and%20Flash%20Encryption%20Using%20EMFI%20EN.pdf	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-35818?: CVE-2023-35818 has been scored as a medium severity vulnerability.
How to fix CVE-2023-35818?: To fix CVE-2023-35818, 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-2023-35818 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2023-35818 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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