Import tcpdump-4.99.4 (last was 4.9.3)

Friday, April 7, 2023 / The Tcpdump Group
Summary for 4.99.4 tcpdump release
Source code:
Fix spaces before tabs in indentation.
Updated printers:
LSP ping: Fix "Unused value" warnings from Coverity.
CVE-2023-1801: Fix an out-of-bounds write in the SMB printer.
DNS: sync resource types with IANA.
ICMPv6: Update the output to show a RPL DAO field name.
Geneve: Fix the Geneve UDP port test.
Building and testing:
Require at least autoconf 2.69.
Don't check for strftime(), as it's in C90 and beyond.
Update config.{guess,sub}, timestamps 2023-01-01,2023-01-21.
Documentation:
man: Document TCP flag names better.

Thursday, January 12, 2023 / The Tcpdump Group
Summary for 4.99.3 tcpdump release
Updated printers:
PTP: Use the proper values for the control field and print un-allocated
values for the message field as "Reserved" instead of "none".
Source code:
smbutil.c: Replace obsolete function call (asctime)
Building and testing:
cmake: Update the minimum required version to 2.8.12 (except Windows).
CI: Introduce and use TCPDUMP_CMAKE_TAINTED.
Makefile.in: Add the releasecheck target.
Makefile.in: Add "make -s install" in the releasecheck target.
Cirrus CI: Run the "make releasecheck" command in the Linux task.
Makefile.in: Add the whitespacecheck target.
Cirrus CI: Run the "make whitespacecheck" command in the Linux task.
Address all shellcheck warnings in update-test.sh.
Makefile.in: Get rid of a remain of gnuc.h.
Documentation:
Reformat the installation notes (INSTALL.txt) in Markdown.
Convert CONTRIBUTING to Markdown.
CONTRIBUTING.md: Document the use of "protocol: " in a commit summary.
Add a README file for NetBSD.
Fix CMake build to set man page section numbers in tcpdump.1

Saturday, December 31, 2022 / The Tcpdump Group
Summary for 4.99.2 tcpdump release
Updated printers:
BGP: Update cease notification decoding to RFC 9003.
BGP: decode BGP link-bandwidth extended community properly.
BGP: Fix parsing the AIGP attribute
BGP: make sure the path attributes don't go past the end of the packet.
BGP: Shutdown message can be up to 255 bytes length according to rfc9003
DSA: correctly determine VID.
EAP: fix some length checks and output issues.
802.11: Fix the misleading comment regarding "From DS", "To DS" Frame
Control Flags.
802.11: Fetch the CF and TIM IEs a field at a time.
802.15.4, BGP, LISP: fix some length checks, compiler warnings,
and undefined behavior warnings.
PFLOG: handle LINKTYPE_PFLOG/DLT_PFLOG files from all OSes on all
OSes.
RRCP: support more Realtek protocols than just RRCP.
MPLS: show the EXP field as TC, as per RFC 5462.
ICMP: redo MPLS Extension code as general ICMP Extension code.
VQP: Do not print unknown error codes twice.
Juniper: Add some bounds checks.
Juniper: Don't treat known DLT_ types as "Unknown".
lwres: Fix a length check, update a variable type.
EAP: Fix some undefined behaviors at runtime.
Ethernet: Rework the length checks, add a length check.
IPX: Add two length checks.
Zephyr: Avoid printing non-ASCII characters.
VRRP: Print the protocol name before any GET_().
DCCP: Get rid of trailing commas in lists.
Juniper: Report invalid packets as invalid, not truncated.
IPv6: Remove an obsolete code in an always-false #if wrapper.
ISAKMP: Use GET_U_1() to replace a direct dereference.
RADIUS: Use GET_U_1() to replace a direct dereference.
TCP: Fix an invalid check.
RESP: Fix an invalid check.
RESP: Remove an unnecessary test.
Arista: Refine the output format and print HwInfo.
sFlow: add support for IPv6 agent, add a length check.
VRRP: add support for IPv6.
OSPF: Update to match the Router Properties registry.
OSPF: Remove two unnecessary dereferences.
OSPF: Add support bit Nt RFC3101.
OSPFv3: Remove two unnecessary dereferences.
ICMPv6: Fix output for Router Renumbering messages.
ICMPv6: Fix the Node Information flags.
ICMPv6: Remove an unused macro and extra blank lines.
ICMPv6: Add a length check in the rpl_dio_print() function.
ICMPv6: Use GET_IP6ADDR_STRING() in the rpl_dio_print() function.
IPv6: Add some checks for the Hop-by-Hop Options header
IPv6: Add a check for the Jumbo Payload Hop-by-Hop option.
NFS: Fix the format for printing an unsigned int
PTP: fix printing of the correction fields
PTP: Use ND_LCHECK_U for checking invalid length.
WHOIS: Add its own printer source file and printer function
MPTCP: print length before subtype inside MPTCP options
ESP: Add a workaround to a "use-of-uninitialized-value".
PPP: Add tests to avoid incorrectly re-entering ppp_hdlc().
PPP: Don't process further if protocol is unknown (-e option).
PPP: Change the pointer to packet data.
ZEP: Add three length checks.
Add some const qualifiers.
Building and testing:
Update config.guess and config.sub.
Use AS_HELP_STRING macro instead of AC_HELP_STRING.
Handle some Autoconf/make errors better.
Fix an error when cross-compiling.
Use "git archive" for the "make releasetar" process.
Remove the release candidate rcX targets.
Mend "make check" on Solaris 9 with Autoconf.
Address assorted compiler warnings.
Fix auto-enabling of Capsicum on FreeBSD with Autoconf.
Treat "msys" as Windows for test exit statuses.
Clean up some help messages in configure.
Use unified diff by default.
Remove awk code from mkdep.
Fix configure test errors with Clang 15
CMake: Prevent stripping of the RPATH on installation.
AppVeyor CI: update Npcap site, update to 1.12 SDK.
Cirrus CI: Use the same configuration as for the main branch.
CI: Add back running tcpdump -J/-L and capture, now with Cirrus VMs.
Remove four test files (They are now in the libpcap tests directory).
On Solaris, for 64-bit builds, use the 64-bit pcap-config.
Tell CMake not to check for a C++ compiler.
CMake: Add a way to request -Werror and equivalents.
configure: Special-case macOS /usr/bin/pcap-config as we do in CMake.
configure: Use pcap-config --static-pcap-only if available.
configure: Use ac_c_werror_flag to force unknown compiler flags to fail.
configure: Use AC_COMPILE_IFELSE() and AC_LANG_SOURCE() for testing
flags.
Run the test that fails on OpenBSD only if we're not on OpenBSD.
Source code:
Fix some snapend-changing routines to protect against pointer
underflow.
Use __func__ from C99 in some function calls.
Memory allocator: Update nd_add_alloc_list() to a static function.
addrtoname.c: Fix two invalid tests.
Use more S_SUCCESS and S_ERR_HOST_PROGRAM in main().
Add some comments about "don't use GET_IP6ADDR_STRING()".
Assign ndo->ndo_packetp in pretty_print_packet().
Add ND_LCHECKMSG_U, ND_LCHECK_U, ND_LCHECKMSG_ZU and ND_LCHECK_ZU macros.
Update tok2strbuf() to a static function.
netdissect.h: Keep the link-layer dissectors names sorted.
setsignal(): Set SA_RESTART on non-lethal signals (REQ_INFO, FLUSH_PCAP)
to avoid corrupting binary pcap output.
Use __builtin_unreachable().
Fail if nd_push_buffer() or nd_push_snaplen() fails.
Improve code style and fix many typos.
Documentation:
Some man page cleanups.
Update the print interface for the packet count to stdout.
Note that we require compilers to support at least some of C99.
Update AIX and Solaris-related specifics.
INSTALL.txt: Add doc/README.*, delete the deleted win32 directory.
Update README.md and README.Win32.md.
Update some comments with new RFC numbers.

Wednesday, June 9, 2021 by gharris
Summary for 4.99.1 tcpdump release
Source code:
Squelch some compiler warnings
ICMP: Update the snapend for some nested IP packets.
MACsec: Update the snapend thus the ICV field is not payload
for the caller.
EIGRP: Fix packet header fields
SMB: Disable printer by default in CMake builds
OLSR: Print the protocol name even if the packet is invalid
MSDP: Print ": " before the protocol name
ESP: Remove padding, padding length and next header from the buffer
DHCPv6: Update the snapend for nested DHCPv6 packets
OpenFlow 1.0: Get snapend right for nested frames.
TCP: Update the snapend before decoding a MPTCP option
Ethernet, IEEE 802.15.4, IP, L2TP, TCP, ZEP: Add bounds checks
ForCES: Refine SPARSEDATA-TLV length check.
ASCII/hex: Use nd_trunc_longjmp() in truncation cases
GeoNet: Add a ND_TCHECK_LEN() call
Replace ND_TCHECK_/memcpy() pairs with GET_CPY_BYTES().
BGP: Fix overwrites of global 'astostr' temporary buffer
ARP: fix overwrites of static buffer in q922_string().
Frame Relay: have q922_string() handle errors better.
Building and testing:
Rebuild configure script when building release
Fix "make clean" for out-of-tree autotools builds
CMake: add stuff from CMAKE_PREFIX_PATH to PKG_CONFIG_PATH.
Documentation:
man: Update a reference as www.cifs.org is gone. [skip ci]
man: Update DNS sections
Solaris:
Fix a compile error with Sun C

Wednesday, December 30, 2020, by mcr@sandelman.ca, denis and fxl.
Summary for 4.99.0 tcpdump release
CVE-2018-16301: For the -F option handle large input files safely.
Improve the contents, wording and formatting of the man page.
Print unsupported link-layer protocol packets in hex.
Add support for new network protocols and DLTs: Arista, Autosar SOME/IP,
Broadcom LI and Ethernet switches tag, IEEE 802.15.9, IP-over-InfiniBand
(IPoIB), Linux SLL2, Linux vsockmon, MACsec, Marvell Distributed Switch
Architecture, OpenFlow 1.3, Precision Time Protocol (PTP), SSH, WHOIS,
ZigBee Encapsulation Protocol (ZEP).
Make protocol-specific updates for: AH, DHCP, DNS, ESP, FRF.16, HNCP,
ICMP6, IEEE 802.15.4, IPv6, IS-IS, Linux SLL, LLDP, LSP ping, MPTCP, NFS,
NSH, NTP, OSPF, OSPF6, PGM, PIM, PPTP, RADIUS, RSVP, Rx, SMB, UDLD,
VXLAN-GPE.
User interface:
Make SLL2 the default for Linux "any" pseudo-device.
Add --micro and --nano shorthands.
Add --count to print a counter only instead of decoding.
Add --print, to cause packet printing even with -w.
Add support for remote capture if libpcap supports it.
Display the "wireless" flag and connection status.
Flush the output packet buffer on a SIGUSR2.
Add the snapshot length to the "reading from file ..." message.
Fix local time printing (DST offset in timestamps).
Allow -C arguments > 2^31-1 GB if they can fit into a long.
Handle very large -f files by rejecting them.
Report periodic stats only when safe to do so.
Print the number of packets captured only as often as necessary.
With no -s, or with -s 0, don't specify the snapshot length with newer
versions of libpcap.
Improve version and usage message printing.
Building and testing:
Install into bindir, not sbindir.
autoconf: replace --with-system-libpcap with --disable-local-libpcap.
Require the compiler to support C99.
Better detect and use various C compilers and their features.
Add CMake as the second build system.
Make out-of-tree builds more reliable.
Use pkg-config to detect libpcap if available.
Improve Windows support.
Add more tests and improve the scripts that run them.
Test both with "normal" and "x87" floating-point.
Eliminate dependency on libdnet.
FreeBSD:
Print a proper error message about monitor mode VAP.
Use libcasper if available.
Fix failure to capture on RDMA device.
Include the correct capsicum header.
Source code:
Start the transition to longjmp() for packet truncation handling.
Introduce new helper functions, including GET_*(), nd_print_protocol(),
nd_print_invalid(), nd_print_trunc(), nd_trunc_longjmp() and others.
Put integer signedness right in many cases.
Introduce nd_uint*, nd_mac_addr, nd_ipv4 and nd_ipv6 types to fix
alignment issues, especially on SPARC.
Fix many C compiler, Coverity, UBSan and cppcheck warnings.
Fix issues detected with AddressSanitizer.
Remove many workarounds for older compilers and OSes.
Add a sanity check on packet header length.
Add and remove plenty of bounds checks.
Clean up pcap_findalldevs() call to find the first interface.
Use a short timeout, rather than immediate mode, for text output.
Handle DLT_ENC files *not* written on the same OS and byte-order host.
Add, and use, macros to do locale-independent case mapping.
Use a table instead of getprotobynumber().
Get rid of ND_UNALIGNED and ND_TCHECK().
Make roundup2() generally available.
Resync SMI list against Wireshark.
Fix many typos.

branches: 1.1.1.1.2; 1.1.1.1.4; 1.1.1.1.6; 1.1.1.1.8; 1.1.1.1.10; 1.1.1.1.12; 1.1.1.1.14; 1.1.1.1.16;
Update of tcpdump to version 4.9.0

This update fixes the following vulnerabilities:
CVE-2016-7922 CVE-2016-7923 CVE-2016-7924 CVE-2016-7925 CVE-2016-7926
CVE-2016-7927 CVE-2016-7928 CVE-2016-7929 CVE-2016-7930 CVE-2016-7931
CVE-2016-7932 CVE-2016-7933 CVE-2016-7934 CVE-2016-7935 CVE-2016-7936
CVE-2016-7937 CVE-2016-7938 CVE-2016-7939 CVE-2016-7940 CVE-2016-7973
CVE-2016-7974 CVE-2016-7975 CVE-2016-7983 CVE-2016-7984 CVE-2016-7985
CVE-2016-7986 CVE-2016-7992 CVE-2016-7993 CVE-2016-8574 CVE-2016-8575
CVE-2017-5202 CVE-2017-5203 CVE-2017-5204 CVE-2017-5205 CVE-2017-5341
CVE-2017-5342 CVE-2017-5482 CVE-2017-5483 CVE-2017-5484 CVE-2017-5485
CVE-2017-5486 (all buffer overflows in various parts of tcpdump)

Upstream Changelog:
General updates:
Improve separation frontend/backend (tcpdump/libnetdissect)
Don't require IPv6 library support in order to support IPv6 addresses
Introduce data types to use for integral values in packet structures
Fix display of timestamps with -tt, -ttt and -ttttt options
Fix some heap overflows found with American Fuzzy Lop by Hanno Boeck and others
(More information in the log with CVE-2016-* and CVE-2017-*)
Change the way protocols print link-layer addresses (Fix heap overflows
in CALM-FAST and GeoNetworking printers)
Pass correct caplen value to ether_print() and some other functions
Fix lookup_nsap() to match what isonsap_string() expects
Clean up relative time stamp printing (Fix an array overflow)
Fix some alignment issues with GCC on Solaris 10 SPARC
Add some ND_TTEST_/ND_TCHECK_ macros to simplify writing bounds checks
Add a fn_printztn() which returns the number of bytes processed
Add nd_init() and nd_cleanup() functions. Improve libsmi support
Add CONTRIBUTING file
Add a summary comment in all printers
Compile with more warning options in devel mode if supported (-Wcast-qual, ...)
Fix some leaks found by Valgrind/Memcheck
Fix a bunch of de-constifications
Squelch some Coverity warnings and some compiler warnings
Update Coverity and Travis-CI setup
Update Visual Studio files

Frontend:
Fix capsicum support to work with zerocopy buffers in bpf
Try opening interfaces by name first, then by name-as-index
Work around pcap_create() failures fetching time stamp type lists
Fix a segmentation fault with 'tcpdump -J'
Improve addrtostr6() bounds checking
Add exit_tcpdump() function
Don't drop CAP_SYS_CHROOT before chrooting
Fixes issue where statistics not reported when -G and -W options used

New printers supporting:
Generic Protocol Extension for VXLAN (VXLAN-GPE)
Home Networking Control Protocol (HNCP), RFCs 7787 and 7788
Locator/Identifier Separation Protocol (LISP), type 3 and type 4 packets
Marvell Extended Distributed Switch Architecture header (MEDSA)
Network Service Header (NSH)
REdis Serialization Protocol (RESP)

Updated printers:
802.11: Beginnings of 11ac radiotap support
802.11: Check the Protected bit for management frames
802.11: Do bounds checking on last_presentp before dereferencing it (Fix a heap overflow)
802.11: Fix the radiotap printer to handle the special bits correctly
802.11: If we have the MCS field, it's 11n
802.11: Only print unknown frame type or subtype messages once
802.11: Radiotap dBm values get printed as dB; Update a test output accordingly
802.11: Source and destination addresses were backwards
AH: Add a bounds check
AH: Report to our caller that dissection failed if a bounds check fails
AP1394: Print src > dst, not dst > src
ARP: Don't assume the target hardware address is <= 6 octets long (Fix a heap overflow)
ATALK: Add bounds and length checks (Fix heap overflows)
ATM: Add some bounds checks (Fix a heap overflow)
ATM: Fix an incorrect bounds check
BFD: Update specification from draft to RFC 5880
BFD: Update to print optional authentication field
BGP: Add decoding of ADD-PATH capability
BGP: Add support for the AIGP attribute (RFC7311)
BGP: Print LARGE_COMMUNITY Path Attribute
BGP: Update BGP numbers from IANA; Print minor values for FSM notification
BOOTP: Add a bounds check
Babel: Add decoder for source-specific extension
CDP: Filter out non-printable characters
CFM: Fixes to match the IEEE standard, additional bounds and length checks
CSLIP: Add more bounds checks (Fix a heap overflow)
ClassicalIPoATM: Add a bounds check on LLC+SNAP header (Fix a heap overflow)
DHCP: Fix MUDURL and TZ options
DHCPv6: Process MUDURL and TZ options
DHCPv6: Update Status Codes with RFCs/IANA names
DNS: Represent the "DNSSEC OK" bit as "DO" instead of "OK". Add a test case
DTP: Improve packet integrity checks
EGP: Fix bounds checks
ESP: Don't use OpenSSL_add_all_algorithms() in OpenSSL 1.1.0 or later
ESP: Handle OpenSSL 1.1.x
Ethernet: Add some bounds checking before calling isoclns_print (Fix a heap overflow)
Ethernet: Print the Length/Type field as length when needed
FDDI: Fix -e output for FDDI
FR: Add some packet-length checks and improve Q.933 printing (Fix heap overflows)
GRE: Add some bounds checks (Fix heap overflows)
Geneve: Fix error message with invalid option length; Update list option classes
HNCP: Fix incorrect time interval format. Fix handling of IPv4 prefixes
ICMP6: Fetch a 32-bit big-endian quantity with EXTRACT_32BITS()
ICMP6: dagid is always an IPv6 address, not an opaque 128-bit string
IGMP: Add a length check
IP: Add a bounds check (Fix a heap overflow)
IP: Check before fetching the protocol version (Fix a heap overflow)
IP: Don't try to dissect if IP version != 4 (Fix a heap overflow)
IP: Stop processing IPPROTO_ values once we hit IPPROTO_IPCOMP
IPComp: Check whether we have the CPI before we fetch it (Fix a heap overflow)
IPoFC: Fix -e output (IP-over-Fibre Channel)
IPv6: Don't overwrite the destination IPv6 address for routing headers
IPv6: Fix header printing
IPv6: Stop processing IPPROTO_ values once we hit IPPROTO_IPCOMP
ISAKMP: Clean up parsing of IKEv2 Security Associations
ISOCLNS/IS-IS: Add support for Purge Originator Identifier (RFC6232) and test cases
ISOCLNS/IS-IS: Don't overwrite packet data when checking the signature
ISOCLNS/IS-IS: Filter out non-printable characters
ISOCLNS/IS-IS: Fix segmentation faults
ISOCLNS/IS-IS: Have signature_verify() do the copying and clearing
ISOCLNS: Add some bounds checks
Juniper: Make sure a Juniper header TLV isn't bigger than what's left in the packet (Fix a heap overflow)
LLC/SNAP: With -e, print the LLC header before the SNAP header; without it, cut the SNAP header
LLC: Add a bounds check (Fix a heap overflow)
LLC: Clean up printing of LLC packets
LLC: Fix the printing of RFC 948-style IP packets
LLC: Skip the LLC and SNAP headers with -x for 802.11 and some other protocols
LLDP: Implement IANA OUI and LLDP MUD option
MPLS LSP ping: Update printing for RFC 4379, bug fixes, more bounds checks
MPLS: "length" is now the *remaining* packet length
MPLS: Add bounds and length checks (Fix a heap overflow)
NFS: Add a test that makes unaligned accesses
NFS: Don't assume the ONC RPC header is nicely aligned
NFS: Don't overflow the Opaque_Handle buffer (Fix a segmentation fault)
NFS: Don't run past the end of an NFSv3 file handle
OLSR: Add a test to cover a HNA sgw case
OLSR: Fix 'Advertised networks' count
OLSR: Fix printing of smart-gateway HNAs in IPv4
OSPF: Add a bounds check for the Hello packet options
OSPF: Do more bounds checking
OSPF: Fix a segmentation fault
OSPF: Fix printing 'ospf_topology_values' default
OTV: Add missing bounds checks
PGM: Print the formatted IP address, not the raw binary address, as a string
PIM: Add some bounds checking (Fix a heap overflow)
PIMv2: Fix checksumming of Register messages
PPI: Pass an adjusted struct pcap_pkthdr to the sub-printer
PPP: Add some bounds checks (Fix a heap overflow)
PPP: Report invalid PAP AACK/ANAK packets
Q.933: Add a missing bounds check
RADIUS: Add Value 13 "VLAN" to Tunnel-Type attribute
RADIUS: Filter out non-printable characters
RADIUS: Translate UDP/1700 as RADIUS
RESP: Do better checking of RESP packets
RPKI-RTR: Add a return value check for "fn_printn" call
RPKI-RTR: Remove printing when truncated condition already detected
RPL: Fix 'Consistency Check' control code
RPL: Fix suboption print
RSVP: An INTEGRITY object in a submessage covers only the submessage
RSVP: Fix an infinite loop; Add bounds and length checks
RSVP: Fix some if statements missing brackets
RSVP: Have signature_verify() do the copying and clearing
RTCP: Add some bounds checks
RTP: Add some bounds checks, fix two segmentation faults
SCTP: Do more bounds checking
SFLOW: Fix bounds checking
SLOW: Fix bugs, add checks
SMB: Before fetching the flags2 field, make sure we have it
SMB: Do bounds checks on NBNS resource types and resource data lengths
SNMP: Clean up the "have libsmi but no modules loaded" case
SNMP: Clean up the object abbreviation list and fix the code to match them
SNMP: Do bounds checks when printing character and octet strings
SNMP: Improve ASN.1 bounds checks
SNMP: More bounds and length checks
STP: Add a bunch of bounds checks, and fix some printing (Fix heap overflows)
STP: Filter out non-printable characters
TCP: Add bounds and length checks for packets with TCP option 20
TCP: Correct TCP option Kind value for TCP Auth and add SCPS-TP
TCP: Fix two bounds checks (Fix heap overflows)
TCP: Make sure we have the data offset field before fetching it (Fix a heap overflow)
TCP: Put TCP-AO option decoding right
TFTP: Don't use strchr() to scan packet data (Fix a heap overflow)
Telnet: Add some bounds checks
TokenRing: Fix -e output
UDLD: Fix an infinite loop
UDP: Add a bounds check (Fix a heap overflow)
UDP: Check against the packet length first
UDP: Don't do the DDP-over-UDP heuristic check up front
VAT: Add some bounds checks
VTP: Add a test on Mgmt Domain Name length
VTP: Add bounds checks and filter out non-printable characters
VXLAN: Add a bound check and a test case
ZeroMQ: Fix an infinite loop

Update of tcpdump to version 4.9.0

This update fixes the following vulnerabilities:
CVE-2016-7922 CVE-2016-7923 CVE-2016-7924 CVE-2016-7925 CVE-2016-7926
CVE-2016-7927 CVE-2016-7928 CVE-2016-7929 CVE-2016-7930 CVE-2016-7931
CVE-2016-7932 CVE-2016-7933 CVE-2016-7934 CVE-2016-7935 CVE-2016-7936
CVE-2016-7937 CVE-2016-7938 CVE-2016-7939 CVE-2016-7940 CVE-2016-7973
CVE-2016-7974 CVE-2016-7975 CVE-2016-7983 CVE-2016-7984 CVE-2016-7985
CVE-2016-7986 CVE-2016-7992 CVE-2016-7993 CVE-2016-8574 CVE-2016-8575
CVE-2017-5202 CVE-2017-5203 CVE-2017-5204 CVE-2017-5205 CVE-2017-5341
CVE-2017-5342 CVE-2017-5482 CVE-2017-5483 CVE-2017-5484 CVE-2017-5485
CVE-2017-5486 (all buffer overflows in various parts of tcpdump)

Upstream Changelog:
General updates:
Improve separation frontend/backend (tcpdump/libnetdissect)
Don't require IPv6 library support in order to support IPv6 addresses
Introduce data types to use for integral values in packet structures
Fix display of timestamps with -tt, -ttt and -ttttt options
Fix some heap overflows found with American Fuzzy Lop by Hanno Boeck and others
(More information in the log with CVE-2016-* and CVE-2017-*)
Change the way protocols print link-layer addresses (Fix heap overflows
in CALM-FAST and GeoNetworking printers)
Pass correct caplen value to ether_print() and some other functions
Fix lookup_nsap() to match what isonsap_string() expects
Clean up relative time stamp printing (Fix an array overflow)
Fix some alignment issues with GCC on Solaris 10 SPARC
Add some ND_TTEST_/ND_TCHECK_ macros to simplify writing bounds checks
Add a fn_printztn() which returns the number of bytes processed
Add nd_init() and nd_cleanup() functions. Improve libsmi support
Add CONTRIBUTING file
Add a summary comment in all printers
Compile with more warning options in devel mode if supported (-Wcast-qual, ...)
Fix some leaks found by Valgrind/Memcheck
Fix a bunch of de-constifications
Squelch some Coverity warnings and some compiler warnings
Update Coverity and Travis-CI setup
Update Visual Studio files

Frontend:
Fix capsicum support to work with zerocopy buffers in bpf
Try opening interfaces by name first, then by name-as-index
Work around pcap_create() failures fetching time stamp type lists
Fix a segmentation fault with 'tcpdump -J'
Improve addrtostr6() bounds checking
Add exit_tcpdump() function
Don't drop CAP_SYS_CHROOT before chrooting
Fixes issue where statistics not reported when -G and -W options used

New printers supporting:
Generic Protocol Extension for VXLAN (VXLAN-GPE)
Home Networking Control Protocol (HNCP), RFCs 7787 and 7788
Locator/Identifier Separation Protocol (LISP), type 3 and type 4 packets
Marvell Extended Distributed Switch Architecture header (MEDSA)
Network Service Header (NSH)
REdis Serialization Protocol (RESP)

Updated printers:
802.11: Beginnings of 11ac radiotap support
802.11: Check the Protected bit for management frames
802.11: Do bounds checking on last_presentp before dereferencing it (Fix a heap overflow)
802.11: Fix the radiotap printer to handle the special bits correctly
802.11: If we have the MCS field, it's 11n
802.11: Only print unknown frame type or subtype messages once
802.11: Radiotap dBm values get printed as dB; Update a test output accordingly
802.11: Source and destination addresses were backwards
AH: Add a bounds check
AH: Report to our caller that dissection failed if a bounds check fails
AP1394: Print src > dst, not dst > src
ARP: Don't assume the target hardware address is <= 6 octets long (Fix a heap overflow)
ATALK: Add bounds and length checks (Fix heap overflows)
ATM: Add some bounds checks (Fix a heap overflow)
ATM: Fix an incorrect bounds check
BFD: Update specification from draft to RFC 5880
BFD: Update to print optional authentication field
BGP: Add decoding of ADD-PATH capability
BGP: Add support for the AIGP attribute (RFC7311)
BGP: Print LARGE_COMMUNITY Path Attribute
BGP: Update BGP numbers from IANA; Print minor values for FSM notification
BOOTP: Add a bounds check
Babel: Add decoder for source-specific extension
CDP: Filter out non-printable characters
CFM: Fixes to match the IEEE standard, additional bounds and length checks
CSLIP: Add more bounds checks (Fix a heap overflow)
ClassicalIPoATM: Add a bounds check on LLC+SNAP header (Fix a heap overflow)
DHCP: Fix MUDURL and TZ options
DHCPv6: Process MUDURL and TZ options
DHCPv6: Update Status Codes with RFCs/IANA names
DNS: Represent the "DNSSEC OK" bit as "DO" instead of "OK". Add a test case
DTP: Improve packet integrity checks
EGP: Fix bounds checks
ESP: Don't use OpenSSL_add_all_algorithms() in OpenSSL 1.1.0 or later
ESP: Handle OpenSSL 1.1.x
Ethernet: Add some bounds checking before calling isoclns_print (Fix a heap overflow)
Ethernet: Print the Length/Type field as length when needed
FDDI: Fix -e output for FDDI
FR: Add some packet-length checks and improve Q.933 printing (Fix heap overflows)
GRE: Add some bounds checks (Fix heap overflows)
Geneve: Fix error message with invalid option length; Update list option classes
HNCP: Fix incorrect time interval format. Fix handling of IPv4 prefixes
ICMP6: Fetch a 32-bit big-endian quantity with EXTRACT_32BITS()
ICMP6: dagid is always an IPv6 address, not an opaque 128-bit string
IGMP: Add a length check
IP: Add a bounds check (Fix a heap overflow)
IP: Check before fetching the protocol version (Fix a heap overflow)
IP: Don't try to dissect if IP version != 4 (Fix a heap overflow)
IP: Stop processing IPPROTO_ values once we hit IPPROTO_IPCOMP
IPComp: Check whether we have the CPI before we fetch it (Fix a heap overflow)
IPoFC: Fix -e output (IP-over-Fibre Channel)
IPv6: Don't overwrite the destination IPv6 address for routing headers
IPv6: Fix header printing
IPv6: Stop processing IPPROTO_ values once we hit IPPROTO_IPCOMP
ISAKMP: Clean up parsing of IKEv2 Security Associations
ISOCLNS/IS-IS: Add support for Purge Originator Identifier (RFC6232) and test cases
ISOCLNS/IS-IS: Don't overwrite packet data when checking the signature
ISOCLNS/IS-IS: Filter out non-printable characters
ISOCLNS/IS-IS: Fix segmentation faults
ISOCLNS/IS-IS: Have signature_verify() do the copying and clearing
ISOCLNS: Add some bounds checks
Juniper: Make sure a Juniper header TLV isn't bigger than what's left in the packet (Fix a heap overflow)
LLC/SNAP: With -e, print the LLC header before the SNAP header; without it, cut the SNAP header
LLC: Add a bounds check (Fix a heap overflow)
LLC: Clean up printing of LLC packets
LLC: Fix the printing of RFC 948-style IP packets
LLC: Skip the LLC and SNAP headers with -x for 802.11 and some other protocols
LLDP: Implement IANA OUI and LLDP MUD option
MPLS LSP ping: Update printing for RFC 4379, bug fixes, more bounds checks
MPLS: "length" is now the *remaining* packet length
MPLS: Add bounds and length checks (Fix a heap overflow)
NFS: Add a test that makes unaligned accesses
NFS: Don't assume the ONC RPC header is nicely aligned
NFS: Don't overflow the Opaque_Handle buffer (Fix a segmentation fault)
NFS: Don't run past the end of an NFSv3 file handle
OLSR: Add a test to cover a HNA sgw case
OLSR: Fix 'Advertised networks' count
OLSR: Fix printing of smart-gateway HNAs in IPv4
OSPF: Add a bounds check for the Hello packet options
OSPF: Do more bounds checking
OSPF: Fix a segmentation fault
OSPF: Fix printing 'ospf_topology_values' default
OTV: Add missing bounds checks
PGM: Print the formatted IP address, not the raw binary address, as a string
PIM: Add some bounds checking (Fix a heap overflow)
PIMv2: Fix checksumming of Register messages
PPI: Pass an adjusted struct pcap_pkthdr to the sub-printer
PPP: Add some bounds checks (Fix a heap overflow)
PPP: Report invalid PAP AACK/ANAK packets
Q.933: Add a missing bounds check
RADIUS: Add Value 13 "VLAN" to Tunnel-Type attribute
RADIUS: Filter out non-printable characters
RADIUS: Translate UDP/1700 as RADIUS
RESP: Do better checking of RESP packets
RPKI-RTR: Add a return value check for "fn_printn" call
RPKI-RTR: Remove printing when truncated condition already detected
RPL: Fix 'Consistency Check' control code
RPL: Fix suboption print
RSVP: An INTEGRITY object in a submessage covers only the submessage
RSVP: Fix an infinite loop; Add bounds and length checks
RSVP: Fix some if statements missing brackets
RSVP: Have signature_verify() do the copying and clearing
RTCP: Add some bounds checks
RTP: Add some bounds checks, fix two segmentation faults
SCTP: Do more bounds checking
SFLOW: Fix bounds checking
SLOW: Fix bugs, add checks
SMB: Before fetching the flags2 field, make sure we have it
SMB: Do bounds checks on NBNS resource types and resource data lengths
SNMP: Clean up the "have libsmi but no modules loaded" case
SNMP: Clean up the object abbreviation list and fix the code to match them
SNMP: Do bounds checks when printing character and octet strings
SNMP: Improve ASN.1 bounds checks
SNMP: More bounds and length checks
STP: Add a bunch of bounds checks, and fix some printing (Fix heap overflows)
STP: Filter out non-printable characters
TCP: Add bounds and length checks for packets with TCP option 20
TCP: Correct TCP option Kind value for TCP Auth and add SCPS-TP
TCP: Fix two bounds checks (Fix heap overflows)
TCP: Make sure we have the data offset field before fetching it (Fix a heap overflow)
TCP: Put TCP-AO option decoding right
TFTP: Don't use strchr() to scan packet data (Fix a heap overflow)
Telnet: Add some bounds checks
TokenRing: Fix -e output
UDLD: Fix an infinite loop
UDP: Add a bounds check (Fix a heap overflow)
UDP: Check against the packet length first
UDP: Don't do the DDP-over-UDP heuristic check up front
VAT: Add some bounds checks
VTP: Add a test on Mgmt Domain Name length
VTP: Add bounds checks and filter out non-printable characters
VXLAN: Add a bound check and a test case
ZeroMQ: Fix an infinite loop