|Off-by-one error in the fb_realpath() function, as derived from the
realpath function in BSD, may allow attackers to execute arbitrary
code, as demonstrated in wu-ftpd 2.5.0 through 2.6.2 via commands that
cause pathnames of length MAXPATHLEN+1 to trigger a buffer overflow,
including (1) STOR, (2) RETR, (3) APPE, (4) DELE, (5) MKD, (6) RMD,
(7) STOU, or (8) RNTO.