A vulnerability in Ethereal may allow a remote attacker to cause a denial of service.
The Ethereal web site describes Ethereal as "a free network protocol analyzer for Unix and Windows. It allows you to examine data from a live network or from a capture file on disk. You can interactively browse the capture data, viewing summary and detail information for each packet. Ethereal has several powerful features, including a rich display filter language and the ability to view the reconstructed stream of a TCP session."
Ethereal includes the ability to examine packets containing DCE RPC data (DCE RPC is "a facility for calling a procedure on a remote machine as if it were a local procedure call"). The vulnerability exists in the way Ethereal's DCE RPC dissector allocates memory. For more information, please see Ethereal's announcement.
A remote attacker may be able to consume excessive amounts of memory, and potentially crash Ethereal.
Upgrade to Ethereal version 0.9.13.
The CERT/CC thanks Ethereal for publishing enpa-sa-00010, upon which this document is based.
This document was written by Ian A Finlay.
|Date First Published:||2003-06-12|
|Date Last Updated:||2003-06-12 20:44 UTC|