CVE-2018-18558: An issue was discovered in Espressif ESP-IDF 2.x and 3.x before 3.0.6 and 3.1.x before 3.1.1. Insufficient validation of input data in the 2nd stage bootloader…

PriorityP428medium6.4CVSS 3.0

AVPACHPRNUINSUCHIHAH

EPSS

0.39%

30.8th percentile

An issue was discovered in Espressif ESP-IDF 2.x and 3.x before 3.0.6 and 3.1.x before 3.1.1. Insufficient validation of input data in the 2nd stage bootloader allows a physically proximate attacker to bypass secure boot checks and execute arbitrary code, by crafting an application binary that overwrites a bootloader code segment in process_segment in components/bootloader_support/src/esp_image_format.c. The attack is effective when the flash encryption feature is not enabled, or if the attacker finds a different vulnerability that allows them to write this binary to flash memory.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
espressif	esp-idf	>= 2.0 < 3.0.6	3.0.6
espressif	esp-idf	3.1 – 3.1.1	—

CVSS provenance

nvdv3.06.4MEDIUMCVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

nvdv2.06.9MEDIUMAV:L/AC:M/Au:N/C:C/I:C/A:C

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