wnpa-sec-2007-01 · Multiple problems in Wireshark (formerly Ethereal)

Summary

Name: Multiple problems in Wireshark (formerly Ethereal)

Docid: wnpa-sec-2007-01

Date: February 1, 2007

Affected versions: 0.10.14 up to and including 0.99.4

Fixed versions: 0.99.5

Details

Description

Wireshark 0.99.5 fixes the following vulnerabilities:

  • The TCP dissector could hang or crash while reassembling HTTP packets. (Bug )
    Versions affected: 0.99.2 to 0.99.4
  • The HTTP dissector could crash.
    Versions affected: 0.99.3 to 0.99.4
  • On some systems, the IEEE 802.11 dissector could crash.
    Versions affected: 0.10.14 to 0.99.4
  • On some systems, the LLT dissector could crash.
    Versions affected: 0.99.3 to 0.99.4

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 0.99.5.

If are running Wireshark 0.99.4 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 HTTP, IEEE 802.11, and LLT dissectors.
    • Select Analyze→Enabled Protocols... from the menu.
    • Make sure "HTTP", "IEEE 802.11", and "LLT" are un-checked.
    • Click "Save", then click "OK".