Vulnerability identifier: #VU56670

Vulnerability risk: High

CVSSv3.1: 8.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-22796

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
EcoStruxure Control Expert
Server applications / SCADA systems
EcoStruxure Process Expert
Server applications / SCADA systems
SCADAPack RemoteConnect for x70
Server applications / SCADA systems

Vendor: Schneider Electric

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted project file and execute arbitrary code on the target system.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

EcoStruxure Control Expert: All versions

EcoStruxure Process Expert: All versions

SCADAPack RemoteConnect for x70: All versions

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External links
http://ics-cert.us-cert.gov/advisories/icsa-21-259-02

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.