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.

CVSS v3.0 6.4 MEDIUM
CVSS v2.0 6.9 MEDIUM

6.4^/10

CVSS v3.0 : MEDIUM

Vector : AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 0.5 / Impact : 5.9

Attack Vector PHYSICAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.9^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:M/Au:N/C:C/I:C/A:C

Exploitability : 3.4 / Impact : 10.0

Access Vector LOCAL

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://www.espressif.com/en/news/Espressif_Product_Security_Advisory_Concerning_Secure_Boot_(CVE-2018-18558)	Release Notes Vendor Advisory
https://github.com/espressif/esp-idf/releases	Release Notes Third Party Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:espressif:esp-idf::::::::
	cpe:2.3:a:espressif:esp-idf::::::::

Information

Published : 2019-05-13 06:29

Updated : 2019-05-14 10:55

NVD link : CVE-2018-18558

Mitre link : CVE-2018-18558

JSON object : View

CWE

CWE-20

Improper Input Validation

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Products Affected

espressif

esp-idf

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