Chinese language researchers found tens of vulnerabilities in a Mercedes-Benz E-Class, together with points that may be exploited to remotely hack it.

A staff of Chinese language consultants from Sky-Go, the Qihoo 360 division centered on automotive hacking, found 19 vulnerabilities in a Mercedes-Benz E-Class, together with some points that may be exploited by attackers to remotely hack a car.

The consultants analyzed a Mercedes E-Class mannequin as a result of it’s a linked automotive with a strong infotainment system with a wealthy set of functionalities.

The analysis started in 2018 and in August 2019, the consultants reported their findings to Daimler, which owns the Mercedes-Benz. In December 2019, the carmaker introduced a partnership with the 360 Group to strengthen automotive IT safety for the trade.

“In 2018, we start analysis on Mercedes-Benz, because it is among the most well-known automotive manufacturers on the earth and an trade benchmark within the automotive trade. We analyze the safety of Mercedes-Benz automobiles. There are such a lot of fashions from Mercedes-Benz, and we lastly selected the analysis goal on Mercedes-Benz E-Class, because the E-Class’s in-vehicle infotainment system has essentially the most connectivity functionalities of all.” reads the analysis paper.

Final week, throughout the Black Hat cybersecurity convention, representatives of Sky-Go and Daimler disclosed the findings of their analysis. The consultants averted to publicly disclose technical particulars of the problems to stop malicious exploitation within the wild.

The staff of consultants was in a position to exploit the failings to remotely unlock the automotive’s doorways and begin the engine of a Mercedes-Benz E-Class. In accordance with the consultants, the flaw may have affected 2 million autos solely in China.

The consultants initially collected related info from the goal gadgets, similar to community topology, pin definitions, chip mannequin, and allow alerts within the automotive. Then disassembled the middle panel within the automotive to investigate the wiring connections between the Digital Management Items (ECUs).

Remotely hack Mercedes-Benz E-Class is possible, experts have demonstrated Security Affairs

The evaluation of the file system of the car’s Telematics Management Unit (TCU), to which they gained entry by acquiring an interactive shell with root privileges, they uncovered passwords and certificates for the backend server.

“If we now have to debug the TCU consumer applications dynamically, we have to tamper the filesystem to get an interactive shell with ROOT privileges.” continues the analysis.

The researchers have been additionally in a position to acquire entry to backend servers by analyzing the car’s embedded SIM (eSIM) card used for the exterior connectivity.

“Automobile Backend is the core of Linked Automobiles. So long as Automobile Backends’ providers could be accessed externally, it signifies that automotive backend is prone to being attacked. The autos connecting to this Automobile Backend are at risk, too. So, our subsequent step is to attempt to entry Automobile Backend.” continues the analysis. “For accessing the APN networks of backend, one risk can be utilizing the e-sim of car-parts because the sim account wouldn’t log off robotically. After tearing down this eSIM, we put it into the 4G router.”

Consultants seen the shortage of authentication between the backend servers and the “Mercedes me” cellular app, which permits customers to remotely management a number of capabilities of the automotive. The researchers defined that when they acquired entry to the backend, they may management any automotive in China.

The consultants mentioned that they didn’t handle to hack any crucial security capabilities of the examined autos.

“Throughout the analysis and joint workshop, we see so many safety designs in Mercedes-Benz Linked Automobiles and these designs are defending the automobiles from varied assaults.” the paper concluded. “The aptitude of a automotive firm to work collectively with researchers contributes to the general safety of our automobiles.”

Pierluigi Paganini

(SecurityAffairs – hacking, Mercedes)