CVE-2020-7559 — HIGH (7.5) — White Hats Nepal

Vulnerability Description

A CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) that could cause a crash of the PLC simulator present in EcoStruxureª Control Expert software when receiving a specially crafted request over Modbus.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Schneider-Electric	Ecostruxure Control Expert	All versions

Related Weaknesses (CWE)

CWE-120

References

https://www.se.com/ww/en/download/document/SEVD-2020-315-07PatchProductVendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1140ExploitThird Party Advisory
https://www.se.com/ww/en/download/document/SEVD-2020-315-07PatchProductVendor Advisory
https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1140ExploitThird Party Advisory

FAQ

What is CVE-2020-7559?

CVE-2020-7559 is a vulnerability with a CVSS score of 7.5 (HIGH). A CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability exists in PLC Simulator on EcoStruxureª Control Expert (now Unity Pro) (all versions) that could cause a...

How severe is CVE-2020-7559?

CVE-2020-7559 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-7559?

Check the references section above for vendor advisories and patch information. Affected products include: Schneider-Electric Ecostruxure Control Expert.