#VU51848 Open redirect in Ilch CMS - CVE-2021-27352

Vulnerability identifier: #VU51848

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-27352

CWE-ID: CWE-601

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Ilch CMS
Web applications / Modules and components for CMS

Vendor: ilch.de

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data in the index.php script. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

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

Vulnerable software versions

Ilch CMS: 2.1.42

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External links
https://drive.google.com/file/d/1kSDlPASBCgJEINxTSIsjMWrU4u4T5XCc/view?usp=sharing
https://github.com/xoffense/POC/blob/main/Ilch%202.1.42%20Open%20redirect
https://s1.demo.opensourcecms.com/ilch/
https://www.ilch.de/
https://www.opensourcecms.com/ilch/

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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.