krb5-appl: ftpd incorrect group privilege dropping (MITKRB5-SA-2011-005)

It was found that ftpd, a Kerberos-aware FTP server, did not properly drop privileges. On Red Hat Enterprise Linux 5, the ftpd daemon did not check for the potential failure of the krb5setegid function call. On systems where the set real, set effective, or set saved group ID system calls might...