The HTTP dissector in Ethereal 0.10.1 through 0.10.7 allows remote attackers to cause a denial of service (application crash) via a certain packet that causes the dissector to access previously-freed memory.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9473
https://exchange.xforce.ibmcloud.com/vulnerabilities/18487
http://www.securityfocus.com/bid/11943
http://www.redhat.com/support/errata/RHSA-2005-037.html
http://www.redhat.com/archives/fedora-legacy-announce/2006-January/msg00003.html
http://www.mandriva.com/security/advisories?name=MDKSA-2004:152
http://www.gentoo.org/security/en/glsa/glsa-200412-15.xml
http://www.ethereal.com/appnotes/enpa-sa-00016.html
http://www.ciac.org/ciac/bulletins/p-061.shtml
http://secunia.com/advisories/13468/
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000916