What is Wireshark?
Wireshark is the world’s most popular network protocol analyzer. It is used for troubleshooting, analysis, development and education.
What’s New
Bug Fixes
The following vulnerabilities have been fixed:
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wnpa-sec-2021-17 RTMPT dissector infinite loop. Issue 17745. CVE-2021-4185.
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wnpa-sec-2021-18 BitTorrent DHT dissector infinite loop. Issue 17754. CVE-2021-4184.
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wnpa-sec-2021-19 pcapng file parser crash. Issue 17755. CVE-2021-4183.
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wnpa-sec-2021-20 RFC 7468 file parser infinite loop. Issue 17801. CVE-2021-4182.
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wnpa-sec-2021-21 Sysdig Event dissector crash. CVE-2021-4181.
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wnpa-sec-2021-22 Kafka dissector infinite loop. Issue 17811.
The following bugs have been fixed:
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Allow sub-second timestamps in hexdumps Issue 15562.
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GRPC: An unnecessary empty Protobuf tree item is displayed if the GRPC message body length is 0 Issue 17675.
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Can’t install "ChmodBPF.pkg" or "Add Wireshark to the system path.pkg" on M1 MacBook Air Monterey without Rosetta 2 Issue 17757.
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TECMP: LIN Payload is cut off by 1 byte Issue 17760.
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Wireshark crashes if a 64 bit field of type BASE_CUSTOM is applied as a column Issue 17762.
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Command line option "-o console.log.level" causes wireshark and tshark to exit on start Issue 17763.
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Setting WIRESHARK_LOG_LEVEL=debug breaks interface capture Issue 17764.
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Unable to build without tshark Issue 17766.
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IEEE 802.11 action frames are not getting parsed and always seen as malformed Issue 17767.
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IEC 60870-5-101 link address field is 1 byte, but should have configurable length of 0,1 or 2 bytes Issue 17775.
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dfilter: 'tcp.port not in {1}' crashes Wireshark Issue 17785.
New and Updated Features
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The 'console.log.level' preference was removed in Wireshark 3.6.0. This release adds an '-o console.log.level:' backward-compatibilty option on the CLI that maps to the new logging sub-system. Note that this does not have bitmask semantics and does not correspond to any actual preference. It is just a transition mechanism for users that were relying on this CLI option and will be removed in the future. To see the new diagnostic output options consult the manpages or the output of '--help'.
New Protocol Support
There are no new protocols in this release.
Updated Protocol Support
ANSI A I/F, AT, BitTorrent DHT, FF, GRPC, IEC 101/104, IEEE 802.11, IEEE 802.11 Radiotap, IPsec, Kafka, QUIC, RTMPT, RTSP, SRVLOC, Sysdig Event, and TECMP
New and Updated Capture File Support
BLF and RFC 7468
New File Format Decoding Support
There is no new or updated file format support in this release.
Getting Wireshark
Wireshark source code and installation packages are available from https://www.wireshark.org/download.html.
Vendor-supplied Packages
Most Linux and Unix vendors supply their own Wireshark packages. You can usually install or upgrade Wireshark using the package management system specific to that platform. A list of third-party packages can be found on the download page on the Wireshark web site.
File Locations
Wireshark and TShark look in several different locations for preference files, plugins, SNMP MIBS, and RADIUS dictionaries.
These locations vary from platform to platform.
You can use or tshark -G folders to find the default locations on your system.
Getting Help
The User’s Guide, manual pages and various other documentation can be found at https://www.wireshark.org/docs/
Community support is available on Wireshark’s Q&A site and on the wireshark-users mailing list. Subscription information and archives for all of Wireshark’s mailing lists can be found on the web site.
Bugs and feature requests can be reported on the issue tracker.
Frequently Asked Questions
A complete FAQ is available on the Wireshark web site.