Information management error in Modicon M221 - CVE-2018-7790

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Main Vulnerability Database Vulnerabilities #VU14553

Information management error in Modicon M221 - CVE-2018-7790

Published: August 29, 2018 / Updated: August 29, 2018


Vulnerability identifier: #VU14553
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-7790
CWE-ID: CWE-199
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: Schneider Electric
Affected software:
Modicon M221

Detailed vulnerability description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The vulnerability exists due to information management error. A remote attacker can connect to a Modicon M221, upload the original program from the PLC and replay authentication sequences.


How to mitigate CVE-2018-7790

Update to version 1.6.2.0.

Sources