Remote code execution in October CMS

1) Race condition

EUVDB-ID: #VU65127

Risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-24800

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to a race condition when processing uploaded filenames passed via the fromData method. A remote attacker can upload and execute arbitrary files on the system.

The vulnerability affects installations of OctoberCMS with plugins that expose the October\Rain\Database\Attach\File::fromData as a public interface.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

October CMS: 1.0.319 - 2.2.14

CPE2.3

• cpe:2.3:a:octobercms:october:1.0.475:*:*:*:*:*:*:*
• cpe:2.3:a:octobercms:october:1.1.11:*:*:*:*:*:*:*
• cpe:2.3:a:octobercms:october:2.0.29:*:*:*:*:*:*:*
• cpe:2.3:a:octobercms:october:2.1.29:*:*:*:*:*:*:*
• cpe:2.3:a:octobercms:october:2.2.14:*:*:*:*:*:*:*

External links

https://github.com/octobercms/october/security/advisories/GHSA-8v7h-cpc2-r8jp/

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.