antMan 0.9.0c – Authentication Bypass

• Exploit Database
• 114 阅读

• 作者： Joshua Bowser
  日期： 2018-03-07
• 类别：

  • webapps
  平台：

  • java
• 来源：https://www.exploit-db.com/exploits/44262/
• 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

  # Exploit Title: antMan <= 0.9.0c Authentication Bypass # Date: 02-27-2018 # Software Link: https://www.antsle.com # Version: <= 0.9.0c # Tested on: 0.9.0c # Exploit Author: Joshua Bowser # Contact: joshua.bowser@codecatoctin.com # Website: http://www.codecatoctin.com # Category: web apps 1. Description antMan versions <= 0.9.c contain a critical authentication defect, allowing an unauthenticated attacker to obtain root permissions within the antMan web management console. http://blog.codecatoctin.com/2018/02/antman-authentication-bypass.html 2. Proof of Concept The antMan authentication implementation obtains user-supplied username and password parameters from a POST request issued to /login. Next, antMan utilizes Java’s ProcessBuilder class to invoke, as root, a bash script called antsle-auth.   This script contains two critical defects that allow an attacker to bypass the authentication checks.By changing the username to > and the password to a url-encoded linefeed (%0a), we can force the authentication script to produce return values not anticipated by the developer.   To exploit these defects, use a web proxy to intercept the login attempt and modify the POST parameters as follows:   #------------------------- POST /login HTTP/1.1 Host: 10.1.1.7:3000 [snip]   username= > &password=%0a #-------------------------   You will now be successfully authenticated to antMan as the administrative root user. 3. Solution: Update to version 0.9.1a