SAE Update - July 2021 - 21

SUPERCHARGING vehicle cybersecurity
FOCUS:
CYBERSECURITY
Man-in-the-middle
configuration with
J1939 traffic being
inspected and
forwarded through a
Beaglebone Black
running Linux and
SocketCAN. This setup
separated the
diagnostic adapter
from the truck.
vehicle is in a safe state. Again note, a vehicle's safe
state is defined by the vehicle manufacturer and may
vary in any vehicle model.
If the vehicle is not in a safe condition for the
requested service, intrusive service operations that
can disturb vehicle systems or subsystems-which
might then lead to dangerous situations (e.g., " brake
bleed " or " move steering rack " functionality)-should
be blocked/rejected. Only non-intrusive services shall
be allowed (at a message update rate which will not
disturb the bus message traffic).
Detection, logging, and reporting
of DLc interface cyber threats
A cyber attack manifests itself as remote code
execution. In other words, an attacker can run
executable code on a remote target. Often, the
challenge is figuring out how the attacker can insert
the code into the remote system.
UPDATE
The scope of SAE J3138
includes security guidance for
how to interface an external
diagnostics computer to a
ground vehicle through its
diagnostic port. This connection
is a critical link in the intrusion
defense system, because of the
internetworking established
between the vehicle networks
(e.g., J1939 - Functional Safety
Communications Protocol) and
a scan tool that is connected to
the internet. Traditionally, this
diagnostics connection has been
trusted, but now vehicle
cybersecurity industry best
practices (such as J3138) provide
recommendations for the
July 2021
21

https://www.sae.org/standards/content/j1939-76_202004/ https://www.sae.org/standards/content/j1939-76_202004/

SAE Update - July 2021

Table of Contents for the Digital Edition of SAE Update - July 2021

SAE Update - July 2021 - Cov1
SAE Update - July 2021 - Cov2
SAE Update - July 2021 - Cov3
SAE Update - July 2021 - 1
SAE Update - July 2021 - 2
SAE Update - July 2021 - 3
SAE Update - July 2021 - 4
SAE Update - July 2021 - 5
SAE Update - July 2021 - 6
SAE Update - July 2021 - 7
SAE Update - July 2021 - 8
SAE Update - July 2021 - 9
SAE Update - July 2021 - 10
SAE Update - July 2021 - 11
SAE Update - July 2021 - 12
SAE Update - July 2021 - 13
SAE Update - July 2021 - 14
SAE Update - July 2021 - 15
SAE Update - July 2021 - 16
SAE Update - July 2021 - 17
SAE Update - July 2021 - 18
SAE Update - July 2021 - 19
SAE Update - July 2021 - 20
SAE Update - July 2021 - 21
SAE Update - July 2021 - 22
SAE Update - July 2021 - 23
SAE Update - July 2021 - 24
SAE Update - July 2021 - 25
SAE Update - July 2021 - 26
SAE Update - July 2021 - 27
SAE Update - July 2021 - 28
SAE Update - July 2021 - 29
SAE Update - July 2021 - 30
SAE Update - July 2021 - 31
SAE Update - July 2021 - 32
SAE Update - July 2021 - 33
SAE Update - July 2021 - 34
SAE Update - July 2021 - 35
SAE Update - July 2021 - 36
SAE Update - July 2021 - 37
SAE Update - July 2021 - 38
SAE Update - July 2021 - 39
SAE Update - July 2021 - 40
SAE Update - July 2021 - 41
SAE Update - July 2021 - 42
SAE Update - July 2021 - 43
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SAE Update - July 2021 - 45
SAE Update - July 2021 - 46
SAE Update - July 2021 - 47
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https://www.nxtbook.com/smg/sae/21UPD12
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