CVE Vulnerability

CVE-2018-7790

An Information Management Error vulnerability exists in Schneider Electric's Modicon M221 product (all references, all versions prior to firmware V1.6.2.0). The vulnerability allows unauthorized users to replay authentication sequences. If an attacker exploits this vulnerability and connects to a Modicon M221, the attacker can upload the original program from the PLC.

7.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://www.schneider-electric.com/en/download/document/SEVD-2018-235-01/ Mitigation Vendor Advisory
http://www.securityfocus.com/bid/105182 Third Party Advisory VDB Entry
Configurations

Configuration 1
Information

Published : 2018-08-29 09:29

Updated : 2022-02-03 02:31

NVD link : CVE-2018-7790

Mitre link : CVE-2018-7790

Products Affected

Modicon M221 Firmware

Schneider-electric

CWE
CWE-294

Authentication Bypass by Capture-replay