A high-severity vulnerability has been discovered in multiple Alpine in-vehicle infotainment systems, including the iLX-507 model. A remote attacker could send a specially crafted digital contact card (vCard) to a vulnerable device, causing it to crash and allowing the attacker to run malicious code. Successful exploitation could grant an attacker full control over the infotainment unit, potentially leading to data theft from connected phones, eavesdropping, or creating a hazardous driver distraction.

The vulnerability is a stack-based buffer overflow within the component responsible for parsing vCard files. When a vulnerable Alpine unit receives and processes a malicious vCard containing an excessive amount of data in a specific field, it writes past the boundary of a fixed-size buffer on the program's stack. This memory corruption can be leveraged by an attacker to overwrite critical control data, such as a function's return address, to redirect program execution to attacker-supplied code (shellcode). An attacker could deliver the malicious vCard file via a common connection method, such as Bluetooth, to trigger the vulnerability and achieve remote code execution (RCE) without any user interaction beyond receiving the file.

This vulnerability is rated as High severity with a CVSS score of 7.4. Exploitation could have a significant business impact, particularly for organizations that utilize vehicles equipped with these systems. An attacker gaining RCE on the infotainment unit could access sensitive information from paired smartphones, including contact lists, call history, and text messages, leading to a serious data breach. Furthermore, an attacker could activate the system's microphone for eavesdropping or manipulate the display to show distracting or misleading information, posing a risk to driver safety and corporate privacy.

Immediate Action: The primary remediation is to apply the security patches provided by Alpine immediately, especially for any systems that have internet connectivity. System owners should visit the official Alpine support website, identify the correct firmware update for their model, and follow the provided instructions for installation.

Proactive Monitoring: IT and security teams should monitor for signs of attempted exploitation. This includes reviewing system logs for errors or crashes related to vCard parsing or Bluetooth file transfers. Monitor network traffic for any unusual outbound connections from infotainment systems. Unexplained device reboots or abnormal behavior after pairing a new device or receiving a contact should be investigated immediately.

Compensating Controls: If patching cannot be performed immediately, implement compensating controls to reduce the attack surface. Disable Bluetooth functionality on the Alpine unit or configure it to be non-discoverable. Instruct users not to pair new or untrusted devices and to decline all incoming file transfers, particularly vCard (.vcf) files, from unknown sources. If the device is connected to a Wi-Fi network, ensure it is properly segmented and firewalled from external access.

Public Exploit Available: false

Given the high severity (CVSS 7.4) and the potential for remote code execution, we recommend that this vulnerability be remediated with high priority. Although there is no current evidence of active exploitation, the risk of data compromise and potential impact on driver safety is significant. Organizations with fleets containing affected Alpine products should immediately begin inventory and patching procedures. Individual owners are strongly advised to install the latest firmware update from Alpine to protect their data and ensure safe operation of their device.