http://www.ringolab.com/note/daiya/archives/005287.html

http://wbb.forum.impressrd.jp/news/20080317/574

http://www.linuxsecurity.com/content/view/133305/169/

http://www.ipa.go.jp/security/fy19/reports/sequential/index.html

http://internet.watch.impress.co.jp/cda/event/2008/03/18/18840.html

http://itpro.nikkeibp.co.jp/article/COLUMN/20080314/296231/

http://seclists.org/bugtraq/2008/Mar/0192.html