Out-of-bounds Write Vulnerability in Modicon Web Server by Schneider Electric
CVE-2020-7563

8.8HIGH

Key Information:

Vendor
Schneider Electric
Status
Web Server On Modicon M340, Modicon Quantum And Modicon Premium Legacy Offers And Their Communication Modules (see Notification For Details)
Vendor
CVE Published:
18 November 2020

Summary

An out-of-bounds write vulnerability exists in the web server component of Schneider Electric's Modicon M340, Modicon Quantum, and Modicon Premium devices. This issue arises when a specially crafted file is uploaded to the controller over FTP, potentially leading to data corruption, system crashes, or unauthorized code execution. This vulnerability affects legacy offers and their associated communication modules, necessitating immediate attention to mitigate risks.

Affected Version(s)

Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see notification for details) Web Server on Modicon M340, Modicon Quantum and Modicon Premium Legacy offers and their Communication Modules (see notification for details)

References

https://www.se.com/ww/en/download/document/SEVD-2020-315-01/
x_refsource_MISC

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.