Vulnerability identifier: #VU48527

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-7553

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
IGSS SCADA
Server applications / SCADA systems

Vendor: Schneider Electric

Description

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

The vulnerability exists due to a boundary error when a malicious CGF (Configuration Group File) is imported to IGSS Definition. A remote attacker can trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

IGSS SCADA: 14.0.0.20247

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External links
http://ics-cert.us-cert.gov/advisories/icsa-20-324-04
http://www.se.com/ww/en/download/document/SEVD-2020-315-03/
http://www.zerodayinitiative.com/advisories/ZDI-21-124/

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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.