The glob implementation in Pure-FTPd before 1.0.32, and in libc in NetBSD 5.1, does not properly expand expressions containing curly brackets, which allows remote authenticated users to cause a denial of service (memory consumption) via a crafted FTP STAT command.
cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/gen/glob.c#rev1.28
cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/gen/glob.c.diff?r1=1.27&r2=1.28&f=h
securityreason.com/achievement_securityalert/97
securityreason.com/securityalert/8228
www.mandriva.com/security/advisories?name=MDVSA-2011:094
www.pureftpd.org/project/pure-ftpd/news
www.securityfocus.com/bid/47671
www.vupen.com/english/advisories/2011/1273
bugzilla.redhat.com/show_bug.cgi?id=704283