Vulnerability identifier: #VU28458

Vulnerability risk: High

CVSSv3.1: 9.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:U/RC:C]

CVE-ID: CVE-2020-13388

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
jw.util
Web applications / Modules and components for CMS

Vendor: Johnny Wezel

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the configuration loading functionality. When loading a configuration with FromString or FromStream with YAML, a remote unauthenticated attacker can execute arbitrary OS commands 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

jw.util: 1.0a - 2.3

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External links
http://joel-malwarebenchmark.github.io
http://joel-malwarebenchmark.github.io/blog/2020/04/27/cve-2020-13388-jw-util-vulnerability/
http://security.netapp.com/advisory/ntap-20200528-0002/

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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. However, proof of concept for this vulnerability is available.