The SNMP dissector in Ethereal 0.8.15 through 0.10.4 allows remote attackers to cause a denial of service (process crash) via a (1) malformed or (2) missing community string, which causes an out-of-bounds read.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9721
https://exchange.xforce.ibmcloud.com/vulnerabilities/16632
http://www.redhat.com/support/errata/RHSA-2004-378.html
http://www.redhat.com/archives/fedora-announce-list/2004-July/msg00014.html
http://www.redhat.com/archives/fedora-announce-list/2004-July/msg00013.html
http://www.mandrakesecure.net/en/advisories/advisory.php?name=MDKSA-2004:067
http://www.kb.cert.org/vuls/id/835846
http://www.gentoo.org/security/en/glsa/glsa-200407-08.xml
http://www.ethereal.com/appnotes/enpa-sa-00015.html
http://www.debian.org/security/2004/dsa-528
http://securitytracker.com/id?1010655
http://secunia.com/advisories/12024
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000916