Vulnerability identifier: #VU29572

Vulnerability risk: Medium

CVSSv3.1: 4.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-15513

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
typo3_forum
Web applications / Modules and components for CMS

Vendor: Mittwald CM Service

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to the ACL check of the extension is broken under certain conditions. A remote attacker can bypass implemented security restrictions and create forum posts.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

typo3_forum: 1.0.0 - 1.2.0

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External links
http://typo3.org/security/advisory/typo3-ext-sa-2020-010/

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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.