inn -- plaintext command injection into encrypted channel

INN developers report:

Fixed a possible plaintext command injection during the
negotiation of a TLS layer. The vulnerability detailed
in CVE-2011-0411 affects the STARTTLS and AUTHINFO SASL
commands. nnrpd now resets its read buffer upon
a successful negotiation of a TLS layer. It prevents
malicious commands, sent unencrypted, from being executed
in the new encrypted state of the session.