# Wireshark 4.2.3 Release Notes

## What is Wireshark?

Wireshark is the world’s most popular network protocol analyzer. It is used for troubleshooting, analysis, development and education.

Wireshark is hosted by the Wireshark Foundation, a nonprofit which promotes protocol analysis education. Wireshark and the foundation depend on your contributions in order to do their work. If you or your organization would like to contribute or become a sponsor, please visit wiresharkfoundation.org.

## What’s New

### Bug Fixes

If you are upgrading Wireshark 4.2.0 or 4.2.1 on Windows you will need to download and install Wireshark 4.2.3 or later by hand.

The following bugs have been fixed:

- Capture start fails when file set enabled and file extension not supplied if directory contains a period. Issue 14614.

- Cannot drag and move custom filter buttons in toolbar. Issue 19447.

- Not equal won’t work when used with wlan.addr. Issue 19449.

- sshdump fails to connect with private key (ssh-rsa) Issue 19510.

- ChmodBPF installation fails on macOS Sonoma 14.1.2. Issue 19527.

- Windows installers should check for Windows 8.1. Issue 19569.

- Fuzz job crash output: fuzz-2024-01-05-7725.pcap. Issue 19570.

- Fuzz job crash output: fuzz-2024-01-06-7734.pcap. Issue 19578.

- Incorrect recursion depth assert failure when dissecting a legitimate GOOSE message. Issue 19580.

- OPC UA - large read request is reported as malformed in 4.2.1 but not in 4.0.12. Issue 19581.

- TFTP dissector bug type listed as netscii instead of netascii doesn’t show all TFTP packets including TFTP blocks. Issue 19589.

- SMB1 replies from LAN Drive app only show up as NBSS Continuation Message. Issue 19593.

- ciscodump - older SSH key exchange algorithms not supported. Issue 19594.

- Problem decoding LAPB/X.25/FTAM after adding X.75 decoding. Issue 19595.

- Wireshark Filter not working. Issue 19604.

- CFLOW: failure to decode 0 length data fields of IPFIX variable length data types. Issue 19605.

- Copy …​as Printable Text Feature Missing in 4.1/4.2. Issue 19607.

- Export Objects - HTTP is missing some HTTP/2 files in a two-pass analysis. Issue 19609.

- ASAM-CMP Plugin: Malformed message, length mismatch if vendor defined data of status messages has odd length. Issue 19626.

- OSS-Fuzz 66561: wireshark:fuzzshark_ip_proto-udp: Null-dereference READ in wmem_map_lookup. Issue 19642.

### New and Updated Features

There are no new or updated features in this release.

### New Protocol Support

There are no new protocols in this release.

### Updated Protocol Support

ASAM CMP, CAN, CFLOW, CMIP, CMP, DAP, DICOM, DISP, E2AP, GLOW, GOOSE, GTP, GTPv2, H.225, H.245, H.248, HTTP2, IEEE 1609.2, IEEE 1722, IPv4, IPv6, ISO 15765, ISUP, ITS, Kerberos, LDAP, MMS, NBT, NRUP, openSAFETY, P22, P7, PARLAY, RTMPT, RTP, SCSI, SOME/IP, T.38, TCP, TECMP, TFTP, WOW, X.509if, X.509sat, X.75, X11, Z39.50, and ZigBee Green Power

### New and Updated Capture File Support

pcap and pcapng

## Prior Versions

This document only describes the changes introduced in Wireshark 4.2.3. You can find release notes for prior versions at the following locations:

- Wireshark 4.2.2

- Wireshark 4.2.1

- Wireshark 4.2.0

## 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 Help › About Wireshark › Folders 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.

You can learn protocol analysis and meet Wireshark’s developers at SharkFest.

## How You Can Help

The Wireshark Foundation helps as many people as possible understand their networks as much as possible. You can find out more and donate at wiresharkfoundation.org.

## Frequently Asked Questions

A complete FAQ is available on the Wireshark web site.