tcpdump: security bump to version 4.7.3

Fixes:

CVE-2015-0261 - issues with IPv6 mobility printer.
CVE-2015-2153 - issue with tcp printer.
CVE-2015-2154 - issue with ethernet printer.
CVE-2015-2155 - issue with force printer.

CVE-2014-9140 fix is upstream so patch dropped.
System libpcap upstream as well so dropped.

CVE-2014-8767, CVE-2014-8768 and CVE-2014-8769 don't seem to be upstream
so keep.

And add hash file.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/tcpdump/0001-Use-system-libpcap-when-configured-with-with-system-.patch

@@ -1,78 +0,0 @@
-From 4289e62c7966e5abeb95307717cef30a51fcdccf Mon Sep 17 00:00:00 2001
-From: Baruch Siach <baruch@tkos.co.il>
-Date: Wed, 29 Oct 2014 13:21:05 +0200
-Subject: [PATCH] Use system libpcap when configured with --with-system-pcap
-
-Don't force the local libpcap build when the system provides one. When
---with-system-pcap is given to configure, don't try to locate a local libpcap
-build. This help build systems like Buildroot that store build trees in the
-same directory, but still prefer dynamically linking against system wide
-libpcap.so to save space.
-
-Signed-off-by: Baruch Siach <baruch@tkos.co.il>
----
-Status: sent upstream (https://github.com/the-tcpdump-group/tcpdump/pull/408)
-
- aclocal.m4 | 46 +++++++++++++++++++++++++---------------------
- 1 file changed, 25 insertions(+), 21 deletions(-)
-
-diff --git a/aclocal.m4 b/aclocal.m4
-index 80614cf21050..cd0a94414bbf 100644
---- a/aclocal.m4
-+++ b/aclocal.m4
-@@ -438,27 +438,31 @@ AC_DEFUN(AC_LBL_LIBPCAP,
- 		    LIBS="$LIBS $pfopen"
- 	    fi
-     fi
--    AC_MSG_CHECKING(for local pcap library)
--    libpcap=FAIL
--    lastdir=FAIL
--    places=`ls $srcdir/.. | sed -e 's,/$,,' -e "s,^,$srcdir/../," | \
--	egrep '/libpcap-[[0-9]]+\.[[0-9]]+(\.[[0-9]]*)?([[ab]][[0-9]]*|-PRE-GIT)?$'`
--    places2=`ls .. | sed -e 's,/$,,' -e "s,^,../," | \
--	egrep '/libpcap-[[0-9]]+\.[[0-9]]+(\.[[0-9]]*)?([[ab]][[0-9]]*|-PRE-GIT)?$'`
--    for dir in $places $srcdir/../libpcap ../libpcap $srcdir/libpcap $places2 ; do
--	    basedir=`echo $dir | sed -e 's/[[ab]][[0-9]]*$//' | \
--	        sed -e 's/-PRE-GIT$//' `
--	    if test $lastdir = $basedir ; then
--		    dnl skip alphas when an actual release is present
--		    continue;
--	    fi
--	    lastdir=$dir
--	    if test -r $dir/libpcap.a ; then
--		    libpcap=$dir/libpcap.a
--		    d=$dir
--		    dnl continue and select the last one that exists
--	    fi
--    done
-+	libpcap=FAIL
-+	AC_MSG_CHECKING(for local pcap library)
-+	AC_ARG_WITH([system-libpcap],
-+		[AS_HELP_STRING([--with-system-libpcap], [don't use local pcap library])])
-+	if test "x$with_system_libpcap" != xyes ; then
-+		lastdir=FAIL
-+    	places=`ls $srcdir/.. | sed -e 's,/$,,' -e "s,^,$srcdir/../," | \
-+		egrep '/libpcap-[[0-9]]+\.[[0-9]]+(\.[[0-9]]*)?([[ab]][[0-9]]*|-PRE-GIT)?$'`
-+    	places2=`ls .. | sed -e 's,/$,,' -e "s,^,../," | \
-+		egrep '/libpcap-[[0-9]]+\.[[0-9]]+(\.[[0-9]]*)?([[ab]][[0-9]]*|-PRE-GIT)?$'`
-+    	for dir in $places $srcdir/../libpcap ../libpcap $srcdir/libpcap $places2 ; do
-+	    	basedir=`echo $dir | sed -e 's/[[ab]][[0-9]]*$//' | \
-+	        	sed -e 's/-PRE-GIT$//' `
-+	    	if test $lastdir = $basedir ; then
-+		    	dnl skip alphas when an actual release is present
-+		    	continue;
-+	    	fi
-+	    	lastdir=$dir
-+	    	if test -r $dir/libpcap.a ; then
-+		    	libpcap=$dir/libpcap.a
-+		    	d=$dir
-+		    	dnl continue and select the last one that exists
-+	    	fi
-+		done
-+	fi
-     if test $libpcap = FAIL ; then
- 	    AC_MSG_RESULT(not found)
- 
--- 
-2.1.1
-

package/tcpdump/0005-fix-CVE-2014-9140.patch

@@ -1,59 +0,0 @@
-From 0f95d441e4b5d7512cc5c326c8668a120e048eda Mon Sep 17 00:00:00 2001
-From: Guy Harris <guy@alum.mit.edu>
-Date: Wed, 22 Oct 2014 12:31:21 -0700
-Subject: [PATCH] Do bounds checking when unescaping PPP.
-
-Clean up a const issue while we're at it.
-
-Upstream commit 0f95d441e4b5d.
-
-Signed-off-by: Baruch Siach <baruch@tkos.co.il>
----
- print-ppp.c | 16 ++++++++--------
- 1 file changed, 8 insertions(+), 8 deletions(-)
-
-diff --git a/print-ppp.c b/print-ppp.c
-index 8e098f05a953..9a983e6179cd 100644
---- a/print-ppp.c
-+++ b/print-ppp.c
-@@ -1351,14 +1351,15 @@ static void
- ppp_hdlc(netdissect_options *ndo,
-          const u_char *p, int length)
- {
--	u_char *b, *s, *t, c;
-+	u_char *b, *t, c;
-+	const u_char *s;
- 	int i, proto;
- 	const void *se;
- 
-         if (length <= 0)
-                 return;
- 
--	b = (uint8_t *)malloc(length);
-+	b = (u_char *)malloc(length);
- 	if (b == NULL)
- 		return;
- 
-@@ -1367,14 +1368,13 @@ ppp_hdlc(netdissect_options *ndo,
- 	 * Do this so that we dont overwrite the original packet
- 	 * contents.
- 	 */
--	for (s = (u_char *)p, t = b, i = length; i > 0; i--) {
-+	for (s = p, t = b, i = length; i > 0 && ND_TTEST(*s); i--) {
- 		c = *s++;
- 		if (c == 0x7d) {
--			if (i > 1) {
--				i--;
--				c = *s++ ^ 0x20;
--			} else
--				continue;
-+			if (i <= 1 || !ND_TTEST(*s))
-+				break;
-+			i--;
-+			c = *s++ ^ 0x20;
- 		}
- 		*t++ = c;
- 	}
--- 
-2.1.3
-

package/tcpdump/tcpdump.hash

@@ -0,0 +1,2 @@
+# Locally calculated after checking pgp signature
+sha256	1f87fb652ce996d41e7a06c601bc6ea29b13fee922945b23770c29490f1d8ace	tcpdump-4.7.3.tar.gz

package/tcpdump/tcpdump.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-TCPDUMP_VERSION = 4.6.2
+TCPDUMP_VERSION = 4.7.3
 TCPDUMP_SITE = http://www.tcpdump.org/release
 TCPDUMP_LICENSE = BSD-3c
 TCPDUMP_LICENSE_FILES = LICENSE
@@ -17,8 +17,6 @@ TCPDUMP_CONF_OPTS = \
 	--with-system-libpcap \
 	$(if $(BR2_PACKAGE_TCPDUMP_SMB),--enable-smb,--disable-smb)
 TCPDUMP_DEPENDENCIES = zlib libpcap
-# Patching aclocal.m4
-TCPDUMP_AUTORECONF = YES
 
 ifeq ($(BR2_STATIC_LIBS),y)
 TCPDUMP_CONF_OPTS += LIBS="$(shell $(STAGING_DIR)/usr/bin/pcap-config --static --additional-libs)"