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Wireshark 1.2.6 Release Notes

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. See the security advisory for details and a workaround.

  • Babi discovered several buffer overflows in the LWRES dissector.

    Versions affected: 0.9.15 to 1.0.10, 1.2.0 to 1.2.5

The following bugs have been fixed:

  • Wireshark could crash while decrypting Kerberos data.

  • Address display filters hang Wireshark. (Bug 658)

  • PSML - structure context node missing. (Bug 1564)

  • Wireshark doesn't dynamically update the packet list. (Bug 1605)

  • LUA: There's no tvb_get_stringz() equivalent. (Bug 2244)

  • tvb_new_real_data is prone to memory leak. (Bug 3917)

  • Malformed OPC UA traffic makes Wireshark "freeze". (Bug 3986)

  • Analyze→Expert... doesn't show IP "Bad Checksum" errors. (Bug 4177)

  • Wireshark can't decrypt WPA(2)-PSK when passphrase is 63 bytes. (Bug 4183)

  • RTP stream analysis: Wrong jitter values after clicking the refresh button. (Bug 4340)

  • Wireshark decodes bootp option 2 incorrectly. (Bug 4342)

  • Deleting SMI modules causes Wireshark to crash. (Bug 4354)

  • Wireshark decodes kerberos AS-REQ PADATA incorrect. (Bug 4363)

  • PDML output from TShark includes invalid characters. (Bug 4402)

  • Empty GPRS LLC S frames cause truncated data exception. (Bug 4417)

New and Updated Features

Feature parity between the 64- and 32-bit Windows installer has been improved. The 64-bit installer now supports the "matches" operator, GeoIP location, and most types of decryption. Kerberos decryption and OID resolution are still not supported.

New Protocol Support

There are no new protocols in this release.

Updated Protocol Support


Updated Capture File Support

There are no updated capture file formats in this release.

Getting Wireshark

Wireshark source code and installation packages are available from

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 About->Folders to find the default locations on your system.

Known Problems

Wireshark may appear offscreen on multi-monitor Windows systems. (Bug 553)

Wireshark might make your system disassociate from a wireless network on OS X. (Bug 1315)

Dumpcap might not quit if Wireshark or TShark crashes. (Bug 1419)

The BER dissector might infinitely loop. (Bug 1516)

Capture filters aren't applied when capturing from named pipes. (Bug 1814)

Wireshark might freeze when reading from a pipe. (Bug 2082)

Filtering tshark captures with display filters (-R) no longer works. (Bug 2234)

The 64-bit Windows installer does not ship with the same libraries as the 32-bit installer. (Bug 3610)

Getting Help

Community support is available on the wireshark-users mailing list. Subscription information and archives for all of Wireshark's mailing lists can be found on the web site.

Commercial support, training, and development services are available from CACE Technologies.

Frequently Asked Questions

A complete FAQ is available on the Wireshark web site.