Vulnerability identifier: #VU53991

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-2021-22761

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
IGSS Definition
Server applications / Other server solutions

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. A remote attacker can create a specially crafted CGF file, trick the victim into opening it, trigger memory corruption 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 Definition: 15.0.0.21140

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External links
http://ics-cert.us-cert.gov/advisories/icsa-21-159-04
http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-159-01
http://www.zerodayinitiative.com/advisories/ZDI-21-676/

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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.