diff options
| author | Theo de Raadt <deraadt@cvs.openbsd.org> | 1996-08-05 00:34:47 +0000 |
|---|---|---|
| committer | Theo de Raadt <deraadt@cvs.openbsd.org> | 1996-08-05 00:34:47 +0000 |
| commit | 0bb655c866b74cdcd15bde96398ed3f98c72723a (patch) | |
| tree | 95d7f6d3b0ab5d60a49ddc3155c317e70f6ac4fa /lib/libc/rpc | |
| parent | 81dbd55ac598ad8e23c798d7322c3531b6b6fad3 (diff) | |
if port 20 incoming, kill it and try again
Diffstat (limited to 'lib/libc/rpc')
| -rw-r--r-- | lib/libc/rpc/svc_tcp.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/lib/libc/rpc/svc_tcp.c b/lib/libc/rpc/svc_tcp.c index 758b9d998a4..c03659b4520 100644 --- a/lib/libc/rpc/svc_tcp.c +++ b/lib/libc/rpc/svc_tcp.c @@ -1,4 +1,4 @@ -/* $OpenBSD: svc_tcp.c,v 1.3 1996/07/20 06:12:45 deraadt Exp $ */ +/* $OpenBSD: svc_tcp.c,v 1.4 1996/08/05 00:34:28 deraadt Exp $ */ /* $NetBSD: svc_tcp.c,v 1.6 1995/06/03 22:37:27 mycroft Exp $ */ /* @@ -33,7 +33,7 @@ #if defined(LIBC_SCCS) && !defined(lint) /*static char *sccsid = "from: @(#)svc_tcp.c 1.21 87/08/11 Copyr 1984 Sun Micro";*/ /*static char *sccsid = "from: @(#)svc_tcp.c 2.2 88/08/01 4.0 RPCSRC";*/ -static char *rcsid = "$OpenBSD: svc_tcp.c,v 1.3 1996/07/20 06:12:45 deraadt Exp $"; +static char *rcsid = "$OpenBSD: svc_tcp.c,v 1.4 1996/08/05 00:34:28 deraadt Exp $"; #endif /* @@ -247,6 +247,14 @@ rendezvous_request(xprt) return (FALSE); } /* + * XXX careful for ftp bounce attacks. If discovered, close the + * socket and look for another connection. + */ + if (addr.sin_port == htons(20)) { + close(sock); + goto again; + } + /* * make a new transporter (re-uses xprt) */ xprt = makefd_xprt(sock, r->sendsize, r->recvsize); |