#VU79506 Improper restriction of excessive authentication attempts in CODESYS Development System - CVE-2023-3669

Vulnerability identifier: #VU79506

Vulnerability risk: Medium

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-3669

CWE-ID: CWE-307

Exploitation vector: 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 perform brute-force attack.

The vulnerability exists due to a missing brute-force protection mechanism. A remote attacker can use an unlimited number of attempts to guess victim's password within an import dialog.

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-2023-023

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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.