Advisory Details

October 24th, 2018

Saga Radio SAGA1-L8B Replay Attack and Command Forgery Vulnerability

ZDI-18-1316
ZDI-CAN-6186

CVE ID CVE-2018-17903
CVSS SCORE 8.3, AV:A/AC:L/Au:N/C:C/I:C/A:C
AFFECTED VENDORS Saga Radio
AFFECTED PRODUCTS SAGA1-L8B
VULNERABILITY DETAILS


This vulnerability allows remote attackers to issue commands on vulnerable installations of Saga Radio equipment. Authentication is not required to exploit this vulnerability.

The specific flaw exists with the communication between the transmitter and receiver pair. By using a fixed control code an attacker can obtain and replay commands to the receiver. An attacker can leverage this vulnerability to issue commands to the physical equipment controlled by the device.
ADDITIONAL DETAILS Saga Radio has issued an update to correct this vulnerability. More details can be found at:
https://ics-cert.us-cert.gov/advisories/ICSA-18-296-02
DISCLOSURE TIMELINE
  • 2018-05-09 - Vulnerability reported to vendor
  • 2018-10-24 - Coordinated public release of advisory
  • 2018-10-24 - Advisory Updated
CREDIT Marco Balduzzi
Philippe Z Lin
Federico Maggi
Jonathan Andersson
Akira Urano
Stephen Hilt
Rainer Vosseler
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