I found this article that claims 4.7's ftpd and sftp are vulnerable to DoS:
http://www.h-online.com/open/news/item/Flaw-in-libc-implementation-threatens-FTP-servers-1103319.html Which links to: http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2010-008.txt.asc I haven't seen any talk of it, is this an issue for us?