Advisory Details

May 17th, 2023

Schneider Electric APC Easy UPS Online Incorrect Permission Assignment Local Privilege Escalation Vulnerability

CVE ID	CVE-2022-42972
CVSS SCORE	7.8, AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Schneider Electric
AFFECTED PRODUCTS	APC Easy
VULNERABILITY DETAILS	This vulnerability allows local attackers to escalate privileges on affected installations of Schneider Electric APC Easy UPS Online. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the product installer. The product sets incorrect permissions on folders. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.
ADDITIONAL DETAILS	Schneider Electric has issued an update to correct this vulnerability. More details can be found at: https://www.cisa.gov/news-events/ics-advisories/icsa-22-347-02
DISCLOSURE TIMELINE	2022-06-17 - 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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