vsftpd: memory leak when deny_file option is set

Memory leak in a certain Red Hat patch, applied to vsftpd 2.0.5 on Red Hat Enterprise Linux RHEL 5 and Fedora 6 through 8, and on Foresight Linux and rPath appliances, allows remote attackers to cause a denial of service memory consumption via a large number of CWD commands, as demonstrated by an...