Vulnerability CVE-2018-7789
Published: 2018-08-29

Description:
An Improper Check for Unusual or Exceptional Conditions 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 remotely reboot Modicon M221 using crafted programing protocol frames.

Type:

CWE-754

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.8/10
6.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete
Affected software
Schneider-electric -> Modicon m221 firmware 

 References:
http://www.securityfocus.com/bid/105171
https://ics-cert.us-cert.gov/advisories/ICSA-18-240-02
https://www.schneider-electric.com/en/download/document/SEVD-2018-233-01/
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