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October CMS Cross Site Scripting

October CMS Cross Site Scripting
Posted Feb 19, 2018
Authored by Samrat Das

October CMS versions prior to 1.0.431 suffer from a cross site scripting vulnerability.

tags | exploit, xss
advisories | CVE-2018-7198
MD5 | 62a133dfd92114f27534b043978277bf

October CMS Cross Site Scripting

Change Mirror Download
# Exploit Title: October CMS Stored Code Injection
# Date: 16-02-2018
# Exploit Author: Samrat Das
# Contact: http://twitter.com/Samrat_Das93
# Website: https://securitywarrior9.blogspot.in/
# Vendor Homepage: *https://octobercms.com/ <https://octobercms.com/>*
# Version: All versions till date from 1.0.431
# CVE : CVE- 2018-7198
# Category: WebApp CMS

1. Description

The application source code is coded in a way which allows malicious
crafted HTML commands to be executed without input validation

2. Proof of Concept

1. Visit the application
2. Visit the Add posts page
3. Goto edit function, add any html based payload and its gets stored and executed subsequently.

Proof of Concept

Steps to Reproduce:

1. Create any HTML based payload such as:

Username:<input type=text> <br>
Password: <input type=text> <br>
<button type="button">Login</button>

2. This hosted page with form action implemented upon clicked by user will lead to exfiltration of credentials apart from performing a host of other actions such as stored xss and another similiar attacks.



3. Solution:

Implement through input validation to reject unsafe html input.


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