Advisory Details

April 30th, 2020

LAquis SCADA LGX File Insufficient UI Warning Arbitrary File Creation Vulnerability

CVE ID	CVE-2020-10618
CVSS SCORE	7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS	LAquis
AFFECTED PRODUCTS	SCADA
VULNERABILITY DETAILS	This vulnerability allows remote attackers to create arbitrary files on affected installations of LAquis SCADA. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of the WriteNumber method when processing LGX files. When opening an LGX file, the user interface fails to warn the user of unsafe actions. An attacker can leverage this vulnerability to execute code in the context of the current user.
ADDITIONAL DETAILS	LAquis has issued an update to correct this vulnerability. More details can be found at: https://www.us-cert.gov/ics/advisories/icsa-20-119-01
DISCLOSURE TIMELINE	2020-02-21 - Vulnerability reported to vendor 2020-04-30 - Coordinated public release of advisory
CREDIT	Natnael Samson (@NattiSamson)

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