STARTTLS Implementation Vulnerability in Cyrus IMAP Server

CVE-2011-1926 · MEDIUM Severity

AV:N/AC:H/AU:N/C:P/I:P/A:P

The STARTTLS implementation in Cyrus IMAP Server before 2.4.7 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411.

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