Bugfix: drop incoming TCP and UDP packets where port numbers are zero
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95d0b09954
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13f6673d04
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@ -41,7 +41,7 @@
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*
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*
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* This file is part of the uIP TCP/IP stack.
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* This file is part of the uIP TCP/IP stack.
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*
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*
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* $Id: uip.c,v 1.18 2009/10/27 23:09:58 adamdunkels Exp $
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* $Id: uip.c,v 1.19 2010/02/04 11:17:42 adamdunkels Exp $
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*
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*
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*/
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*/
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@ -1106,6 +1106,12 @@ uip_process(u8_t flag)
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uip_len = uip_len - UIP_IPUDPH_LEN;
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uip_len = uip_len - UIP_IPUDPH_LEN;
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#endif /* UIP_UDP_CHECKSUMS */
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#endif /* UIP_UDP_CHECKSUMS */
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/* Make sure that the UDP destination port number is not zero. */
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if(UDPBUF->destport == 0) {
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UIP_LOG("udp: zero port.");
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goto drop;
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}
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/* Demultiplex this UDP packet between the UDP "connections". */
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/* Demultiplex this UDP packet between the UDP "connections". */
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for(uip_udp_conn = &uip_udp_conns[0];
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for(uip_udp_conn = &uip_udp_conns[0];
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uip_udp_conn < &uip_udp_conns[UIP_UDP_CONNS];
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uip_udp_conn < &uip_udp_conns[UIP_UDP_CONNS];
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@ -1222,6 +1228,12 @@ uip_process(u8_t flag)
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goto drop;
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goto drop;
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}
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}
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/* Make sure that the TCP port number is not zero. */
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if(BUF->destport == 0 || BUF->srcport == 0) {
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UIP_LOG("tcp: zero port.");
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goto drop;
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}
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/* Demultiplex this segment. */
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/* Demultiplex this segment. */
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/* First check any active connections. */
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/* First check any active connections. */
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for(uip_connr = &uip_conns[0]; uip_connr <= &uip_conns[UIP_CONNS - 1];
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for(uip_connr = &uip_conns[0]; uip_connr <= &uip_conns[UIP_CONNS - 1];
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@ -41,7 +41,7 @@
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*
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*
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* This file is part of the uIP TCP/IP stack.
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* This file is part of the uIP TCP/IP stack.
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*
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*
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* $Id: uip6.c,v 1.8 2009/11/12 14:05:42 joxe Exp $
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* $Id: uip6.c,v 1.9 2010/02/04 11:17:42 adamdunkels Exp $
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*
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*
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*/
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*/
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@ -1358,6 +1358,12 @@ uip_process(u8_t flag)
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uip_len = uip_len - UIP_IPUDPH_LEN;
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uip_len = uip_len - UIP_IPUDPH_LEN;
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#endif /* UIP_UDP_CHECKSUMS */
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#endif /* UIP_UDP_CHECKSUMS */
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/* Make sure that the UDP destination port number is not zero. */
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if(UIP_UDP_BUF->destport == 0) {
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UIP_LOG("udp: zero port.");
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goto drop;
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}
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/* Demultiplex this UDP packet between the UDP "connections". */
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/* Demultiplex this UDP packet between the UDP "connections". */
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for(uip_udp_conn = &uip_udp_conns[0];
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for(uip_udp_conn = &uip_udp_conns[0];
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uip_udp_conn < &uip_udp_conns[UIP_UDP_CONNS];
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uip_udp_conn < &uip_udp_conns[UIP_UDP_CONNS];
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@ -1444,6 +1450,12 @@ uip_process(u8_t flag)
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goto drop;
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goto drop;
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}
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}
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/* Make sure that the TCP port number is not zero. */
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if(UIP_TCP_BUF->destport == 0 || UIP_TCP_BUF->srcport == 0) {
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UIP_LOG("tcp: zero port.");
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goto drop;
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}
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/* Demultiplex this segment. */
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/* Demultiplex this segment. */
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/* First check any active connections. */
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/* First check any active connections. */
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for(uip_connr = &uip_conns[0]; uip_connr <= &uip_conns[UIP_CONNS - 1];
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for(uip_connr = &uip_conns[0]; uip_connr <= &uip_conns[UIP_CONNS - 1];
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