diff options
| author | Jeremie Courreges-Anglas <jca@cvs.openbsd.org> | 2017-10-04 20:15:53 +0000 |
|---|---|---|
| committer | Jeremie Courreges-Anglas <jca@cvs.openbsd.org> | 2017-10-04 20:15:53 +0000 |
| commit | 92440caccb2098ea0dd638dc607065155340d940 (patch) | |
| tree | 873f76570f82b6d31f829aa99f1e1265d68f6364 /usr.sbin | |
| parent | 126e6e36cc16e68f0c736511a59787f3144c288b (diff) | |
Don't try to handle IPv4-compatible IPv6 addresses
ok florian@ millert@
Diffstat (limited to 'usr.sbin')
| -rw-r--r-- | usr.sbin/inetd/inetd.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/usr.sbin/inetd/inetd.c b/usr.sbin/inetd/inetd.c index 8b7c8f3a8e2..4670540b604 100644 --- a/usr.sbin/inetd/inetd.c +++ b/usr.sbin/inetd/inetd.c @@ -1,4 +1,4 @@ -/* $OpenBSD: inetd.c,v 1.156 2017/10/04 19:52:26 jca Exp $ */ +/* $OpenBSD: inetd.c,v 1.157 2017/10/04 20:15:52 jca Exp $ */ /* * Copyright (c) 1983,1991 The Regents of the University of California. @@ -444,7 +444,6 @@ dg_badinput(struct sockaddr *sa) case AF_INET: in.s_addr = ntohl(((struct sockaddr_in *)sa)->sin_addr.s_addr); port = ntohs(((struct sockaddr_in *)sa)->sin_port); - v4chk: if (IN_MULTICAST(in.s_addr)) goto bad; switch ((in.s_addr & 0xff000000) >> 24) { @@ -460,16 +459,12 @@ dg_badinput(struct sockaddr *sa) if (IN6_IS_ADDR_MULTICAST(in6) || IN6_IS_ADDR_UNSPECIFIED(in6)) goto bad; /* - * OpenBSD does not support IPv4 mapped address (RFC2553 - * inbound behavior) at all. We should drop it. + * OpenBSD does not support IPv4-mapped and + * IPv4-compatible IPv6 addresses (RFC2553). We should + * drop the packet. */ - if (IN6_IS_ADDR_V4MAPPED(in6)) + if (IN6_IS_ADDR_V4MAPPED(in6) || IN6_IS_ADDR_V4COMPAT(in6)) goto bad; - if (IN6_IS_ADDR_V4COMPAT(in6)) { - memcpy(&in, &in6->s6_addr[12], sizeof(in)); - in.s_addr = ntohl(in.s_addr); - goto v4chk; - } break; default: /* Unsupported AF */ |