Uncaught Exception in Schneider Electric products - CVE-2018-7857
Published: October 2, 2019
Vulnerability identifier: #VU21491
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: CVE-2018-7857
CWE-ID: CWE-248
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Schneider Electric
Affected software:
Modicon Quantum
Modicon Premium
Modicon M340
Modicon M580
Modicon Quantum
Modicon Premium
Modicon M340
Modicon M580
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service (DoS) condition on the target system.
The vulnerability exists due to uncaught exception vulnerability when writing out of bounds variables to the controller over Modbus. A remote attacker can cause a denial of service condition.
Note: A partial fix is available for this vulnerability on Modicon M580 firmware V2.80 and Modicon M340 firmware V3.01
How to mitigate CVE-2018-7857
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.