#VU25846 Arbitrary file upload in Horde Form - CVE-2020-8866

Vulnerability identifier: #VU25846

Vulnerability risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-8866

CWE-ID: CWE-434

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Horde Form
Web applications / Modules and components for CMS

Vendor: Horde Project

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient processing of file uploads in "add.php" script. A remote authenticated user can upload and execute arbitrary file on the server.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Horde Form: 2.0.0 - 2.0.19

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External links
https://www.zerodayinitiative.com/advisories/ZDI-20-275/
https://lists.horde.org/archives/announce/2020/001288.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?

No. We are not aware of malware exploiting this vulnerability.