Date: 20 Apr 2005 17:29:31 -0000 From: David Thiel <lx@redundancy.redundancy.org> To: FreeBSD-gnats-submit@FreeBSD.org Subject: ports/80161: Maintainer Update: dns/dnshijacker patch Message-ID: <20050420172931.19505.qmail@redundancy.redundancy.org> Resent-Message-ID: <200504201730.j3KHURCB010759@freefall.freebsd.org>
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>Number: 80161
>Category: ports
>Synopsis: Maintainer Update: dns/dnshijacker patch
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-ports-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: maintainer-update
>Submitter-Id: current-users
>Arrival-Date: Wed Apr 20 17:30:26 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator: David Thiel
>Release: FreeBSD 5.3-STABLE i386
>Organization:
>Environment:
System: FreeBSD redundancy.redundancy.org 5.3-STABLE FreeBSD 5.3-STABLE #0: Sun Jan 9 21:41:16 PST 2005 root@redundancy.redundancy.org:/usr/obj/usr/src/sys/REDUNDANCY i386
>Description:
Spoofed packets were being sent with incorrect checksums. The included
patch fixes.
>How-To-Repeat:
>Fix:
diff -ruN dnshijacker.old/files/dnshijacker.c.patch dnshijacker/files/dnshijacker.c.patch
--- dnshijacker.old/files/dnshijacker.c.patch Wed Dec 31 16:00:00 1969
+++ dnshijacker/files/dnshijacker.c.patch Fri Apr 15 18:35:25 2005
@@ -0,0 +1,11 @@
+--- dnshijacker.c.orig Thu Mar 31 15:00:10 2005
++++ dnshijacker.c Thu Mar 31 15:01:43 2005
+@@ -733,7 +733,7 @@ void spoof_dns (int socket) {
+ * source and destination are swapped here because we are spoofing a reply
+ */
+
+- libnet_build_ip(LIBNET_UDP_H + LIBNET_DNS_H,
++ libnet_build_ip(packet_size - LIBNET_IP_H,
+ 0, /* ip tos */
+ 0, /* ip id */
+ 0, /* fragmentation bits */
>Release-Note:
>Audit-Trail:
>Unformatted:
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