DNS dissector in Ethereal before 0.9.3 allows remote attackers to cause a denial of service (CPU consumption) via a malformed packet that causes Ethereal to enter an infinite loop.
http://www.securityfocus.com/bid/4807
http://www.redhat.com/support/errata/RHSA-2002-170.html
http://www.redhat.com/support/errata/RHSA-2002-088.html
http://www.redhat.com/support/errata/RHSA-2002-036.html
http://www.iss.net/security_center/static/9205.php
http://www.ethereal.com/appnotes/enpa-sa-00004.html
http://www.debian.org/security/2002/dsa-130
http://marc.info/?l=bugtraq&m=102268626526119&w=2
http://distro.conectiva.com/atualizacoes/?id=a&anuncio=000505