Advisory Details

July 7th, 2020

C-MORE HMI EA9 Control Port Missing Authentication for Critical Function Remote Code Execution Vulnerability

CVE ID	CVE-2020-10920
CVSS SCORE	9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	C-MORE
AFFECTED PRODUCTS	HMI EA9
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on affected installations of C-More HMI EA9 touch screen panels. Authentication is not required to exploit this vulnerability. The specific flaw exists within the control service, which listens on TCP port 9999 by default. The issue results from the lack of authentication prior to allowing alterations to the system configuration. An attacker can leverage this vulnerability to execute code in the context of the device.
ADDITIONAL DETAILS	Fixed in version 6.60
DISCLOSURE TIMELINE	2020-02-21 - Vulnerability reported to vendor 2020-07-07 - Coordinated public release of advisory 2020-07-08 - Advisory Updated
CREDIT	Ta-Lun Yen & Chizuru Toyama of TXOne IoT/ICS Security Research Labs (Trend Micro)

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