Arachni Web Application Scanner Web UI Stored XSS Vulnerability

vendor:

Arachni Web Application Scanner

by:

Prakhar Prasad

7.5

CVSS

HIGH

Stored XSS

CWE

Product Name: Arachni Web Application Scanner

Affected Version From: Arachni v0.4.7/WebUI v0.4.4

Affected Version To: Possibly lower versions too

Patch Exists: YES

Related CWE: CVE-2014-5469

CPE: a:arachni:arachni:0.4.7

Metasploit:

Other Scripts:

Platforms Tested: Ubuntu 14.04

2014

Arachni Web Application Scanner Web UI Stored XSS Vulnerability

This is an authenticated Stored XSS vulnerability in Arachni Web UI. A malicious user can craft a link in a comment that will execute arbitrary Javascript.

Mitigation:

Implement input validation and output encoding to prevent XSS attacks.

Source

Exploit-DB raw data:

Title: Arachni Web Application Scanner Web UI Stored XSS Vulnerability
CVE: 2014-5469
Vendor Homepage: http://www.arachni-scanner.com/
Author: Prakhar Prasad
Author Homepage: https://prakharprasad.com
Reference: https://github.com/Arachni/arachni-ui-web/issues/71
Affected Version: Arachni v0.4.7/WebUI v0.4.4 (possibly in lower versions
too)
Date: August 17th 2014
Tested on: Arachni v0.4.7/WebUI v0.4.4 - Ubuntu 14.04


 Details
=======

This is an authenticated Stored XSS, hence the user needs to be logged in
to exploit this issue.

A malicious user (admin/regular) can initiate a website scan in the Arachni
Web UI. After initiating the scan, there is an option of users to comment
onto it (with Markdown formatting). However using Markdown the malicious
user can craft a link that will execute arbitrary Javascript once clicked.

The proof of concept XSS comment: [XSS](javascript:alert('XSS'))

The above comment will roughly translate into: <a
href="javascript:alert('XSS');">XSS</a>. Hence creating an anchor with
user-supplied Javascript content.