#VU48710 Code Injection in October CMS - CVE-2020-26231

Vulnerability identifier: #VU48710

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-2020-26231

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
October CMS
Web applications / CMS

Vendor: OctoberCMS

Description

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

The vulnerability exists due to improper input validation. A remote user with the cms.manage_pages, cms.manage_layouts, or cms.manage_partials permissions can send a specially crafted request and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

October CMS: 1.0.319 - 1.0.469, 1.1.0 - 1.1.1

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External links
https://github.com/octobercms/october/commit/d34fb8ab51108495a9a651b841202d935f4e12f7
https://github.com/octobercms/october/security/advisories/GHSA-r89v-cgv7-3jhx

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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.