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wnpa-sec-2010-02 · LWRES vulnerability in Wireshark


Name: LWRES vulnerability in Wireshark

Docid: wnpa-sec-2010-02

Date: January 27, 2010

Affected versions: 0.9.0 up to and including 1.2.5

Fixed versions: 1.2.6



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


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


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".