Vulnerability CVE-2018-7791


Published: 2018-08-29

Description:
A Permissions, Privileges, and Access Control 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 overwrite the original password with their password. If an attacker exploits this vulnerability and overwrite the password, the attacker can upload the original program from the PLC.

Type:

CWE-862

(Missing Authorization)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Schneider-electric -> Modicon m221 firmware 

 References:
http://www.securityfocus.com/bid/105182
https://www.schneider-electric.com/en/download/document/SEVD-2018-235-01/

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