Information
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Advisory by Netsparker
Name: Cross-site Scripting vulnerability in Ampache 4.4.2
Affected Software: Ampache
Affected Versions: 4.4.2
Homepage: http://ampache.org/
Vulnerability: Cross-Site Scripting
Severity: High
Status: Fixed
CVSS Score (3.0): 7.4 (High)
Netsparker Advisory Reference: NS-21-003

Technical Details
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Cross-site scripting in Random.php

URL: http://alihost:1134/random.php?action=get_advanced&type=%27%22%20onmouseover%3dalert(0x0002DE)%20
Parameter Name: type
Parameter Type: GET
Attack Pattern: %27%22+ns%3dnetsparker(0x0002DE)+

Vulnerability Details

Netsparker detected a Cross-site Scripting vulnerability, which allows an attacker to execute a dynamic script (JavaScript, VBScript) in the context of the application.

This allows several different attack opportunities, mostly hijacking the current session of the user or changing the look of the page by changing the HTML on the fly to steal the user's credentials. This happens because the input entered by a user has been interpreted as HTML/JavaScript/VBScript by the browser. Cross-site scripting targets the users of the application instead of the server. Although this is a limitation, since it allows attackers to hijack other users' sessions, an attacker might attack an administrator to gain full control over the application.

For more information on cross-site scripting vulnerabilities read the article Cross-site Scripting (XSS).

Advisory Timeline
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26th May 2021 - First Contact
22nd June 2021 - Vulnerability Fixed
21st July 2021 - Advisory Released

Credits & Authors
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These issues have been discovered by Ali Oğuz while testing the Netsparker Web Application Security Scanner.

About Netsparker
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Netsparker web application security scanner finds and reports security flaws and vulnerabilities such as SQL Injection and Cross-site Scripting (XSS) in all websites and web applications, regardless of the platform and technology they are built on. Netsparker scanning engine’s unique detection and exploitation techniques allow it to be dead accurate in reporting vulnerabilities.