What is Wireshark?
Wireshark is the world’s most popular network protocol analyzer. It is used for troubleshooting, analysis, development and education.
The following vulnerabilities have been fixed:
wnpa-sec-2021-04 MS-WSP dissector excessive memory consumption. Issue 17331.
The following bugs have been fixed:
TShark does not print GeoIP information Issue 14691.
TShark error when piping to "head" Issue 16192.
Parts of ASCII representation in Packet Bytes pane are missing Issue 17087.
Buildbot crash output: fuzz-2021-02-22-1012761.pcap Issue 17254.
NDPE attribute of NAN packet is not dissected Issue 17278.
TECMP: reserved flag interpreted as part of timestamp Issue 17279.
Master branch does not compile at least with gcc-11 Issue 17281.
DNS IXFR/AXFR multiple response Issue 17293.
File too large Issue 17301.
Build fails with CMake 3.20 Issue 17314.
New and Updated Features
New Protocol Support
There are no new protocols in this release.
Updated Protocol Support
DECT, DNS, EAP, Kerberos, LDAP, MS-WSP, SMB2, Sysdig, TECMP, and WiFi NAN
New and Updated Capture File Support
Wireshark source code and installation packages are available from https://www.wireshark.org/download.html.
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.
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 About → Folders to find the default locations on your system.
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.
Issues and feature requests can be reported on the issue tracker.
Frequently Asked Questions
A complete FAQ is available on the Wireshark web site.