Advisory Details

October 25th, 2018

Saga Radio SAGA1-L8B Firmware Upgrade Remote Code Execution Vulnerability

CVE ID	CVE-2018-17923
CVSS SCORE	6.1, AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	SAGA
AFFECTED PRODUCTS	SAGA1-L8B
VULNERABILITY DETAILS	This vulnerability allows attackers with physical access to modify firmware on vulnerable installations of Saga Radio equipment. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the device programming mechanism. The device is insufficiently protected from unauthorized firmware updates. An attacker can leverage this vulnerability to bypass authentication and install persistent malicious firmware on the device.
ADDITIONAL DETAILS	SAGA 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	2018-06-29 - Vulnerability reported to vendor 2018-10-25 - Coordinated public release of advisory
CREDIT	Philippe Lin, Jonathan Andersson, Rainer Vosseler, Federico Maggi, Urano Akira, Stephen Hilt, Marco Balduzzi

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