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
CSH Severity: High
CVSS v4: 9.3 [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]
CVE-ID: CVE-2020-7559
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
PLC Simulator for EcoStruxure Control Expert
EcoStruxure Control Expert
EcoStruxure Control Expert
How to mitigate CVE-2020-7559
Install update from vendor's website.
EcoStruxure Control Expert - update to 15.0