Stored XSS in October CMS

1) Dangerous file upload

EUVDB-ID: #VU83560

Risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-44383

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability exists due to the application allows upload of SVG files. A remote user can upload a malicious SVG file with XSS payload in it and execute arbitrary JavaScript code.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

October CMS: 3.0.0 - 3.5.1

CPE2.3

• cpe:2.3:a:octobercms:october:3.0.74:*:*:*:*:*:*:
• cpe:2.3:a:octobercms:october:3.1.26:*:*:*:*:*:*:
• cpe:2.3:a:octobercms:october:3.2.11:*:*:*:*:*:*:
• cpe:2.3:a:octobercms:october:3.3.11:*:*:*:*:*:*:
• cpe:2.3:a:octobercms:october:3.4.14:*:*:*:*:*:*:
• cpe:2.3:a:octobercms:october:3.5.1:*:*:*:*:*:*:

External links

http://github.com/octobercms/october/security/advisories/GHSA-rvx8-p3xp-fj3p

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.