CLSA-2023-1681491348 Fix CVE(s): CVE-2023-27536, CVE-2023-27535, CVE-2023-27533

SECURITY UPDATE: Telnet option IAC injection - debian/patches/CVE-2023-27533.patch: only accept option arguments in ascii to avoid embedded telnet negotiation commands - CVE-2023-27533 SECURITY UPDATE: FTP too eager connection reuse - debian/patches/CVE-2023-27535.patch: add more conditions for...