Unspecified vulnerability in the sFlow dissector in Wireshark 1.2.0 allows remote attackers to cause a denial of service (CPU and memory consumption) via unspecified vectors.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5795
http://www.wireshark.org/security/wnpa-sec-2009-04.html
http://www.vupen.com/english/advisories/2009/1970