Wireshark 1.2.6 fixes the following vulnerabilities:

• 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

Impact

It may be possible to make Wireshark crash remotely or by convincing someone to read a malformed packet trace file.

Resolution

Upgrade to Wireshark 1.2.6 or later.

If are running Wireshark {{ end_version }} or earlier (including Ethereal) and cannot upgrade, you can work around each of the problems listed above by doing the following:

• Disable the LWRES dissector:
  • Select Analyze→Enabled Protocols... from the menu.
  • Make sure "LWRES" is un-checked.
  • Click "Save", then click "OK".