Vulnerability Details 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 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 8.8%
CVSS Severity
CVSS v3 Score 6.4
CVSS v2 Score 6.9
References
- https://github.com/espressif/esp-idf/releases
- https://www.espressif.com/en/news/Espressif_Product_Security_Advisory_Concerning_Secure_Boot_%28CVE-2018-18558%29
- https://github.com/espressif/esp-idf/releases
- https://www.espressif.com/en/news/Espressif_Product_Security_Advisory_Concerning_Secure_Boot_%28CVE-2018-18558%29
Products affected by CVE-2018-18558
-
cpe:2.3:a:espressif:esp-idf:2.0
-
cpe:2.3:a:espressif:esp-idf:2.0.0
-
cpe:2.3:a:espressif:esp-idf:2.1
-
cpe:2.3:a:espressif:esp-idf:2.1.1
-
cpe:2.3:a:espressif:esp-idf:3.0
-
cpe:2.3:a:espressif:esp-idf:3.0.1
-
cpe:2.3:a:espressif:esp-idf:3.0.2
-
cpe:2.3:a:espressif:esp-idf:3.0.3
-
cpe:2.3:a:espressif:esp-idf:3.0.4
-
cpe:2.3:a:espressif:esp-idf:3.0.5
-
cpe:2.3:a:espressif:esp-idf:3.1
-
cpe:2.3:a:espressif:esp-idf:3.1.1