Vulnerability identifier: #VU57139

Vulnerability risk: High

CVSSv3.1: 9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-38432

CWE-ID: CWE-121

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Communication Server
Server applications / Other server solutions

Vendor: Fatek

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 unauthenticated attacker can send a specially crafted request to the Facon Server, trigger a stack-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
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Communication Server: 1.13

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External links
http://ics-cert.us-cert.gov/advisories/icsa-21-280-07
http://www.zerodayinitiative.com/advisories/ZDI-21-1164/

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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.