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.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

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

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

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

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:schneider-electric:modicon_m221_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:schneider-electric:modicon_m221:-:*:*:*:*:*:*:*

History

03 Feb 2022, 14:31

Type	Values Removed	Values Added
CPE	cpe:2.3:h:se:modicon_m221:-:::::::*	cpe:2.3:h:schneider-electric:modicon_m221:-:::::::*
CVSS	v2 : ~~5.0~~ v3 : ~~9.8~~	v2 : 7.5 v3 : 9.8
First Time		Schneider-electric modicon M221

31 Jan 2022, 19:55

Type	Values Removed	Values Added
First Time		Schneider-electric Schneider-electric modicon M221 Firmware
CPE	cpe:2.3:o:se:modicon_m221_firmware::::::::	cpe:2.3:o:schneider-electric:modicon_m221_firmware::::::::

19 Aug 2021, 18:21

Type	Values Removed	Values Added
CPE	cpe:2.3:o:schneider-electric:modicon_m221_firmware:::::::: cpe:2.3:h:schneider-electric:modicon_m221:-:::::::*	cpe:2.3:o:se:modicon_m221_firmware:::::::: cpe:2.3:h:se:modicon_m221:-:::::::*

Information

Published : 2018-08-29 21:29

Updated : 2023-12-10 12:44

NVD link : CVE-2018-7790

Mitre link : CVE-2018-7790

CVE.ORG link : CVE-2018-7790

JSON object : View

Products Affected

schneider-electric

modicon_m221
modicon_m221_firmware

CWE

CWE-294

Authentication Bypass by Capture-replay

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