CVE-2024-12054

Summary

ZF Roll Stability Support Plus (RSSPlus) is vulnerable to an authentication bypass vulnerability targeting deterministic RSSPlus SecurityAccess service seeds, which may allow an attacker to remotely (proximal/adjacent with RF equipment or via pivot from J2497 telematics devices) call diagnostic functions intended for workshop or repair scenarios. This can impact system availability, potentially degrading performance or erasing software, however the vehicle remains in a safe vehicle state.

Affected Software

VendorProductVersion RangeStatus
ZFRSSPlus 2M01/08 < 01/23affected

Weaknesses

  • CWE-305: CWE-305

Workarounds

To most effectively mitigate general vulnerabilities of the powerline communication, any trucks, trailers, and tractors utilizing J2497 technology should disable all features where possible, except for backwards-compatibility with LAMP ON detection only. Users acquiring new trailer equipment should migrate all diagnostics to newer trailer bus technology. Users acquiring new tractor equipment should remove support for reception of any J2497 message other than LAMP messages. ZF recommends:

  • Moving away from security access and implementing the latest security feature authenticate (0x29). 

  • Ensure random numbers are generated from a cryptographically secure hardware true random number generator. 

  • Adopting modern standards/protocols for truck trailer communication. NMFTA has published detailed information about how to mitigate these issues in the following ways:

  • Install a LAMP ON firewall for each ECU. 

  • Use a LAMP detect circuit LAMP ON sender with each trailer. 

  • Change addresses dynamically on each tractor in response to detecting a transmitter on its current address. 

  • Install RF chokes on each trailer between chassis ground and wiring ground. 

  • Load with LAMP keyhole signal on each tractor. 

  • Flood with jamming signal on each tractor. 

Please visit NMFTA https://nmfta.org/wp-content/media/2022/11/Actionable_Mitigations_Options_v9_DIST.pdf

for additional details on these and other solutions.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References