diff options
Diffstat (limited to 'sys/netinet/libalias/alias_irc.c')
| -rw-r--r-- | sys/netinet/libalias/alias_irc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/netinet/libalias/alias_irc.c b/sys/netinet/libalias/alias_irc.c index 6a8ebe2..ec5aa8a 100644 --- a/sys/netinet/libalias/alias_irc.c +++ b/sys/netinet/libalias/alias_irc.c @@ -236,6 +236,12 @@ lFOUND_CTCP: true_addr.s_addr = htonl(org_addr); destaddr.s_addr = 0; + /* Sanity/Security checking */ + if (!org_addr || !org_port || + pip->ip_src.s_addr != true_addr.s_addr || + org_port < IPPORT_RESERVED) + goto lBAD_CTCP; + /* Steal the FTP_DATA_PORT - it doesn't really matter, and this would probably allow it through at least _some_ firewalls. */ |
