CVEvulnerability

CVE-2018-18203

6.4 MEDIUM Published 2018-11-28 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-11-28
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-347

Description

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.

Affected configurations

• subaru starlink 2017 firmware • subaru starlink 2018 firmware • subaru starlink 2019 firmware

Related

Weakness · CWE (1)

  • CWE-347 Improper Verification of Cryptographic Signature weakness

References