CVE-2023-26243

Name of the Vulnerable Software and Affected Versions Hyundai Gen5W L in-vehicle infotainment system version AE E PE EUR.S5W L001.001.211214

Description An issue was discovered in the Hyundai Gen5W L in-vehicle infotainment system. The decryption binary used to decrypt firmware files has an information leak that allows an attacker to read the AES key and initialization vector from memory. An attacker may exploit this to create custom firmware that may be installed in the IVI system. Then, an attacker may be able to install a backdoor in the IVI system that may allow him to control it, if it is connected to the Internet through Wi-Fi.

Recommendations For Hyundai Gen5W L in-vehicle infotainment system version AE E PE EUR.S5W L001.001.211214, as a temporary workaround, consider restricting access to the decryption binary until a patch is available. Additionally, restrict Internet connectivity through Wi-Fi to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.