uftpd Null Pointer Dereference Vulnerability

uftpd is a Linux FTP/TFTP server. A null pointer dereference vulnerability exists in uftpd versions prior to 2.12. The vulnerability stems from the failure of handleCWD in ftpcmd.c in uftpd to properly handle user-supplied paths. An attacker can cause a denial of service via the CWD /... command ...