#VU48961 Stack-based buffer overflow in PLC Simulator for EcoStruxure Control Expert and EcoStruxure Control Expert - CVE-2020-7559
Published: November 19, 2020 / Updated: December 14, 2020
Vulnerability identifier: #VU48961
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-7559
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
PLC Simulator for EcoStruxure Control Expert
EcoStruxure Control Expert
PLC Simulator for EcoStruxure Control Expert
EcoStruxure Control Expert
Software vendor:
Schneider Electric
Schneider Electric
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the Modbus message-processing functionality. A remote unauthenticated attacker can send a specially crafted request, trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.