package/pure-ftpd: fix CVE-2020-9274
An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer
vulnerability has been detected in the diraliases linked list. When the
*lookup_alias(const char alias) or print_aliases(void) function is
called, they fail to correctly detect the end of the linked list and try
to access a non-existent list member. This is related to init_aliases in
diraliases.c.
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>