#VU58246 Use-after-free in GUIcon Eurotherm - CVE-2021-22808

Vulnerability identifier: #VU58246

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-22808

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GUIcon Eurotherm
Hardware solutions / Firmware

Vendor: Schneider Electric

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when a malicious *.gd1 configuration file is loaded into the GUIcon tool. A remote attacker can execute arbitrary code on the target system.

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

Vulnerable software versions

GUIcon Eurotherm: 2.0.683.003

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External links
https://ics-cert.us-cert.gov/advisories/icsa-21-313-02
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-313-07

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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.