Write-what-where Condition in Schneider Electric EcoStruxure Control Expert

1) Write-what-where Condition

EUVDB-ID: #VU48962

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-2020-7560

CWE-ID: CWE-123 - Write-what-where Condition

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to a write-what-where condition in the APX project file processing functionality. A remote attacker can trick a victim to open a STA project archive containing a specially crafted APX 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: 14.1

External links

http://www.se.com/ww/en/download/document/SEVD-2020-343-01/
http://talosintelligence.com/vulnerability_reports/TALOS-2020-1144

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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