Comment 7 for bug 172283

There are also new issues in 0.99.7:
From upstream:

Summary

Name: Multiple problems in Wireshark® (formerly Ethereal®) versions 0.6.0 to 0.99.7

Docid: wnpa-sec-2008-01

Date: February 27, 2008

Versions affected: 0.6.0 up to and including 0.99.7
Details
Description

Wireshark 0.99.8 fixes the following vulnerabilities:

    * The SCTP dissector could crash.
      Versions affected: 0.99.5 to 0.99.7
    * The SNMP dissector could crash. (Bugs 2144 and 2277)
      Versions affected: 0.99.6 to 0.99.7
    * The TFTP dissector could crash Wireshark on Ubuntu 7.10. (This appears to be a bug in the Cairo library on that platform.) Reported by Noam Rathaus.
      Versions affected: 0.6.0 to 0.99.7

Impact

It may be possible to make Wireshark or Ethereal crash or use up available memory by injecting a purposefully malformed packet onto the wire or by convincing someone to read a malformed packet trace file.
Resolution

Upgrade to Wireshark 0.99.8.

If are running Wireshark 0.99.7 or Ethereal 0.99.0 or earlier and cannot upgrade, you can work around each of the problems listed above by doing the following:

    * Disable the SCTP, SNMP and TFTP dissectors.
          o Select Analyze→Enabled Protocols... from the menu.
          o Make sure "SCTP," "SNMP," and "TFTP" are un-checked.
          o Click "Save", then click "OK".