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Land #6257, @all3g's aux module for locating git repos over HTTP
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## | ||
# This module requires Metasploit: http://metasploit.com/download | ||
# Current source: https://github.com/rapid7/metasploit-framework | ||
## | ||
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require 'msf/core' | ||
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class Metasploit3 < Msf::Auxiliary | ||
include Msf::Exploit::Remote::HttpClient | ||
include Msf::Auxiliary::Scanner | ||
include Msf::Auxiliary::Report | ||
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def initialize | ||
super( | ||
'Name' => 'HTTP Git Scanner', | ||
'Description' => %q( | ||
This module can detect situations where there may be information | ||
disclosure vulnerabilities that occur when a Git repository is made | ||
available over HTTP. | ||
), | ||
'Author' => [ | ||
'Nixawk', # module developer | ||
'Jon Hart <jon_hart[at]rapid7.com>' # improved metasploit module | ||
], | ||
'References' => [ | ||
['URL', 'https://github.com/git/git/blob/master/Documentation/technical/index-format.txt'] | ||
], | ||
'License' => MSF_LICENSE | ||
) | ||
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register_options( | ||
[ | ||
OptString.new('TARGETURI', [true, 'The test path to .git directory', '/.git/']), | ||
OptBool.new('GIT_INDEX', [true, 'Check index file in .git directory', true]), | ||
OptBool.new('GIT_CONFIG', [true, 'Check config file in .git directory', true]), | ||
OptString.new('UserAgent', [ true, 'The HTTP User-Agent sent in the request', 'git/1.7.9.5' ]) | ||
] | ||
) | ||
end | ||
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def req(filename) | ||
send_request_cgi( | ||
'uri' => normalize_uri(target_uri, filename) | ||
) | ||
end | ||
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def git_index_parse(resp) | ||
return if resp.blank? || resp.length < 12 # A 12-byte header | ||
signature = resp[0, 4] | ||
return unless signature == 'DIRC' | ||
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version = resp[4, 4].unpack('N')[0].to_i | ||
entries_count = resp[8, 4].unpack('N')[0].to_i | ||
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return unless version && entries_count | ||
[version, entries_count] | ||
end | ||
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def git_index | ||
res = req('index') | ||
index_uri = git_uri('index') | ||
unless res | ||
vprint_error("#{index_uri} - No response received") | ||
return | ||
end | ||
vprint_status("#{index_uri} - HTTP/#{res.proto} #{res.code} #{res.message}") | ||
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return unless res.code == 200 | ||
version, count = git_index_parse(res.body) | ||
return unless version && count | ||
print_good("#{full_uri} - git repo (version #{version}) found with #{count} files") | ||
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report_note( | ||
host: rhost, | ||
port: rport, | ||
proto: 'tcp', | ||
type: 'git_index_disclosure', | ||
data: { uri: index_uri, version: version, entries_count: count } | ||
) | ||
end | ||
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def git_config | ||
res = req('config') | ||
config_uri = git_uri('config') | ||
unless res | ||
vprint_error("#{config_uri} - No response received") | ||
return | ||
end | ||
vprint_status("#{config_uri} - HTTP/#{res.proto} #{res.code} #{res.message}") | ||
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return unless res.code == 200 && res.body =~ /\[(?:branch|core|remote)\]/ | ||
print_good("#{config_uri} - git config file found") | ||
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report_note( | ||
host: rhost, | ||
port: rport, | ||
proto: 'tcp', | ||
type: 'git_config_disclosure', | ||
data: { uri: config_uri } | ||
) | ||
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path = store_loot('config', 'text/plain', rhost, res.body, config_uri) | ||
print_good("Saved file to: #{path}") | ||
end | ||
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def git_uri(path) | ||
full_uri =~ %r{/$} ? "#{full_uri}#{path}" : "#{full_uri}/#{path}" | ||
end | ||
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def run_host(_target_host) | ||
vprint_status("#{full_uri} - scanning git disclosure") | ||
git_index if datastore['GIT_INDEX'] | ||
git_config if datastore['GIT_CONFIG'] | ||
end | ||
end |