CVE-2020-7566 — HIGH (7.3) — White Hats Nepal

Vulnerability Description

A CWE-334: Small Space of Random Values vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption keys when the attacker has captured the traffic between EcoStruxure Machine - Basic software and Modicon M221 controller.

CVSS Score

7.3

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Schneider-Electric	Modicon M221 Firmware	-
Schneider-Electric	Modicon M221	-

Related Weaknesses (CWE)

CWE-334

References

https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04Third Party AdvisoryUS Government Resource
https://www.se.com/ww/en/download/document/SEVD-2020-315-05/Vendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-04Third Party AdvisoryUS Government Resource
https://www.se.com/ww/en/download/document/SEVD-2020-315-05/Vendor Advisory

FAQ

What is CVE-2020-7566?

CVE-2020-7566 is a vulnerability with a CVSS score of 7.3 (HIGH). A CWE-334: Small Space of Random Values vulnerability exists in Modicon M221 (all references, all versions) that could allow the attacker to break the encryption keys when the attacker has captured th...

How severe is CVE-2020-7566?

CVE-2020-7566 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-7566?

Check the references section above for vendor advisories and patch information. Affected products include: Schneider-Electric Modicon M221 Firmware, Schneider-Electric Modicon M221.