CVE Vulnerability

CVE-2018-18203

A vulnerability in the update mechanism of Subaru StarLink Harman head units 2017, 2018, and 2019 may give an attacker (with physical access to the vehicle's USB ports) the ability to rewrite the firmware of the head unit. This occurs because the device accepts modified QNX6 filesystem images (as long as the attacker obtains access to certain Harman decryption/encryption code) as a consequence of a bug where unsigned images pass a validity check. An attacker could potentially install persistent malicious head unit firmware and execute arbitrary code as the root user.

6.9 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.4 / Impact : 10

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

Scope

6.4 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

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

References
Link Resource
https://github.com/sgayou/subaru_starlink_research Exploit Third Party Advisory
Configurations

Configuration 1
Information

Published : 2018-11-28 11:29

Updated : 2019-02-05 08:25

NVD link : CVE-2018-18203

Mitre link : CVE-2018-18203

Products Affected
No products.
CWE
CWE-347

Improper Verification of Cryptographic Signature