CVE-2022-0878 Novel attack against the Combined Charging System (CCS) in electric vehicles to remotely cause a denial of service
Attackers can remotely disrupt electric vehicle charging sessions via electromagnetic interference, affecting all compliant CCS implementations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-0878?
CVE-2022-0878 is a medium-severity denial of service vulnerability in Combined Charging System, published on 12 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Electric Vehicle (EV) commonly utilises the Combined Charging System (CCS) for DC rapid charging. To exchange important messages such as the State of Charge (SoC) with the Electric Vehicle Supply Equipment (EVSE) CCS uses a high-bandwidth IP link provided by the HomePlug Green PHY (HPGP) power-line communication (PLC) technology. The attack interrupts necessary control communication between the vehicle and charger, causing charging sessions to abort. The attack can be conducted wirelessly from a distance using electromagnetic interference, allowing individual vehicles or entire fleets to be disrupted simultaneously. In addition, the attack can be mounted with off-the-shelf radio hardware and minimal technical knowledge. With a power budget of 1 W, the attack is successful from around 47 m distance. The exploited behavior is a required part of the HomePlug Green PHY, DIN 70121 & ISO 15118 standards and all known implementations exhibit it. In addition to electric cars, Brokenwire affects electric ships, airplanes and heavy duty vehicles utilising these standards.
Weakness: CWE-306
Which versions are affected by CVE-2022-0878?
It affects 1 product.
Products include Combined Charging System Project Combined Charging System Firmware.
How do I fix CVE-2022-0878?
No fix has been published for CVE-2022-0878 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-0878 being exploited?
There is no known exploitation of CVE-2022-0878 in the wild and no public exploit code.
Sources
Also known as GHSA-qw95-rrxc-r294.