Advisory Details

May 17th, 2023

Delta Electronics InfraSuite Device Master CheckgRPCAuthentication Authentication Bypass Vulnerability

CVE ID	CVE-2023-1136
CVSS SCORE	9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Delta Electronics
AFFECTED PRODUCTS	InfraSuite Device Master
VULNERABILITY DETAILS	This vulnerability allows remote attackers to bypass authentication on affected installations of Delta Electronics InfraSuite Device Master. Authentication is not required to exploit this vulnerability. The specific flaw exists within the CheckgRPCAuthentication function. When parsing serialized objects, the server does not properly validate user-supplied data. An attacker can leverage this vulnerability to bypass authentication on the system.
ADDITIONAL DETAILS	Delta Electronics has issued an update to correct this vulnerability. More details can be found at: https://www.cisa.gov/news-events/ics-advisories/icsa-23-080-02
DISCLOSURE TIMELINE	2022-10-31 - Vulnerability reported to vendor 2023-05-17 - Coordinated public release of advisory
CREDIT	Piotr Bazydlo (@chudypb) of Trend Micro Zero Day Initiative

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