WordPress Plugin LifterLMS 4.21.0 – Stored Cross-Site Scripting (XSS)

• Exploit Database
• 18 阅读

• 作者： Captain_hook
  日期： 2021-05-28
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/49912/

• # Exploit Title: WordPress Plugin LifterLMS 4.21.0 - Stored Cross-Site Scripting (XSS) 
  # Date: 2021-05-10
  # Exploit Author: Captain_hook
  # Vendor Homepage: https://lifterlms.com/
  # Software Link: https://github.com/gocodebox/lifterlms/releases/tag/4.21.0
  # Version: LifterLMS < 4.21.1
  # Tested on: ANY
  # CVE : CVE-2021-24308
  
  #Summary:
  
  The 'State' field of the Edit profile page of the LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordPress plugin before 4.21.1 is not properly sanitised when output in the About section of the profile page, leading to a stored Cross-Site Scripting issue. This could allow low privilege users (such as students) to elevate their privilege via an XSS attack when an admin will view their profile.
  
  #Proof_of_Concept:
  
  1- As a Lowest Privilege user go to the edit account page of the LMS
  (e.g https://example.com/my-courses/edit-account/)
  
  2- Put Your XSS payload in State parameter and save your edits, such
  as "><script>alert(/XSS/)</script>
  
  3- The XSS will be stored and triggered in the about section of the profile: (e.ghttps://example.com/directory/[user_name]/) (Note): The XSS will also be triggered in the admin dashboard when viewing the user details, for example https://example.com/wp-admin/admin.php?page=llms-reporting&tab=students&stab=information&student_id=2
  
  Refernces:
  
  https://github.com/gocodebox/lifterlms/releases/tag/4.21.0