Debian Security Update DSA-5827-1 proftpd-dfsg - security update

[LinuxBot]

Brian Ristuccia discovered that in ProFTPD, a powerful modular FTP/SFTP/FTPS server, supplemental group inheritance grants unintended access to GID 0 because of the lack of supplemental groups from mod_sql.
https://security-tracker.debian.org/tracker/DSA-5827-1

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