KeystoneJS 4.0.0-beta.5 – CSV Excel Macro Injection

• Exploit Database
• 20 阅读

• 作者： Ishaq Mohammed
  日期： 2017-10-25
• 类别：

  • webapps
  平台：

  • nodejs
• 来源：https://www.exploit-db.com/exploits/43053/

• # Exploit Title: KeystoneJS 4.0.0-beta.5 Unauthenticated CSV Injection
  # Vendor Homepage: http://keystonejs.com/
  # Exploit Author: Ishaq Mohammed
  # Contact: https://twitter.com/security_prince
  # Website: https://about.me/security-prince
  # Category: WEBAPPS
  # Platform: Node.js
  # CVE: CVE-2017-15879
  
  Vendor Description:
  
  KeystoneJS is a powerful Node.js content management system and web app
  framework built on express and mongoose. Keystone makes it easy to create
  sophisticated web sites and apps, and comes with a beautiful auto-generated
  Admin UI.
  Source: https://github.com/keystonejs/keystone/blob/master/README.md
  
  Technical Details and Exploitation:
  
  CSV Injection (aka Excel Macro Injection or Formula Injection) exists in
  admin/server/api/download.js and lib/list/getCSVData.js in KeystoneJS
  before 4.0.0-beta.7 via a value that is mishandled in a CSV export.
  
  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15879
  
  Proof of Concept:
  
  1.Go to Contact Us page and insert the below payload in the Name Field.
  Payload: @SUM(1+1)*cmd|' /C calc'!A0
  2. Login as Admin
  3. Now Navigate to Enquiries page and check the entered payload.
  4. Download as .csv, once done open it in excel and observe that calculator
  application gets open.
  
  
  Solution:
  
  The issues have been fixed and the vendor has released the patches
  https://github.com/keystonejs/keystone/pull/4478/commits/1b791d55839ebf434e104cc9936ccb8c29019231
  
  Reference:
  
  https://github.com/keystonejs/keystone/pull/4478
  https://securelayer7.net/download/pdf/KeystoneJS-Pentest-Report-SecureLayer7.pdf
  
  -- 
  Best Regards,
  Ishaq Mohammed
  https://about.me/security-prince