diff options
| author |   angelos <angelos@openbsd.org> | 1998-06-27 02:09:46 +0000 |
|---|---|---|
| committer | angelos <angelos@openbsd.org> | 1998-06-27 02:09:46 +0000 |
| commit | 6ca3c1336eaba96a18daa395153b03655bc840c1 (patch) | |
| tree | 8c07fd4bddf18eb1de68954b26402139e7646218 /sys/netinet/tcp_usrreq.c | |
| parent | No way, not yet. You did not even test, did you, david (diff) | |
| download | wireguard-openbsd-6ca3c1336eaba96a18daa395153b03655bc840c1.tar.xz wireguard-openbsd-6ca3c1336eaba96a18daa395153b03655bc840c1.zip | |
Disallow TCP connect() to multicast addresses; cmetz@inner.net
Diffstat (limited to 'sys/netinet/tcp_usrreq.c')
| -rw-r--r-- | sys/netinet/tcp_usrreq.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/netinet/tcp_usrreq.c b/sys/netinet/tcp_usrreq.c index e53d2b40a98..2abcefd468b 100644 --- a/sys/netinet/tcp_usrreq.c +++ b/sys/netinet/tcp_usrreq.c @@ -1,4 +1,4 @@ -/* $OpenBSD: tcp_usrreq.c,v 1.25 1998/06/26 18:07:30 deraadt Exp $ */ +/* $OpenBSD: tcp_usrreq.c,v 1.26 1998/06/27 02:09:46 angelos Exp $ */ /* $NetBSD: tcp_usrreq.c,v 1.20 1996/02/13 23:44:16 christos Exp $ */ /* @@ -198,6 +198,13 @@ tcp_usrreq(so, req, m, nam, control) case PRU_CONNECT: sin = mtod(nam, struct sockaddr_in *); + /* Disallow connects to a multicast address */ + if (IN_MULTICAST(sin->sin_addr.s_addr)) + { + error = EINVAL; + break; + } + /* Trying to connect to some broadcast address */ if (in_broadcast(sin->sin_addr, NULL)) { error = EINVAL; |