CVEvulnerability

CVE-2018-18558

6.4 MEDIUM Published 2019-05-13 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2019-05-13
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
6.4 MEDIUM — CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
6.9 MEDIUM — AV:L/AC:M/Au:N/C:C/I:C/A:C
Weaknesses
CWE-20

Description

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 configurations

• espressif esp-idf (>= 2.0 < 3.0.6) • espressif esp-idf (>= 3.1 <= 3.1.1)

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References