#VU79505 Missing support for integrity check in CODESYS Development System - CVE-2023-3663

Vulnerability identifier: #VU79505

Vulnerability risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-3663

CWE-ID: CWE-353

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
CODESYS Development System
Client/Desktop applications / Other client software

Vendor: CODESYS

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to missing integrity check on notification data within the LearnMoreAction function. An attacker on the local network can send specially crafted requests to the application and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

CODESYS Development System: before 3.5.19.20

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External links
https://cert.vde.com/en/advisories/VDE-2023-022/
https://www.zerodayinitiative.com/advisories/ZDI-23-1105/

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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