Vulnerability identifier: #VU51116

Vulnerability risk: Medium

CVSSv3.1: 6.2 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:H/RL:O/RC:C]

CVE-ID: CVE-2021-23132

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Joomla!
Web applications / CMS

Vendor: Joomla!

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists within the com_media component. A remote attacker can use a specially crafted HTTP request and upload images to paths that are not intended for image uploads.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Joomla!: 3.9.0 - 3.9.24, 3.8.0 - 3.8.13, 3.7.0 - 3.7.5, 3.6.0 - 3.6.5, 3.5.0 - 3.5.9, 3.0.0 - 3.0.4, 3.3.0 - 3.3.6, 3.2.0 - 3.2.7, 3.4.0 - 3.4.8, 3.1.0 - 3.1.6

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External links
http://developer.joomla.org/security-centre/846-20210306-core-com-media-allowed-paths-that-are-not-intended-for-image-uploads.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.