| Package | Affected versions | Patched versions |
|---|---|---|
| nginx | ≥ 1.5.6, < 1.6.1≥ 1.7.0, < 1.7.4 | 1.6.11.7.4 |
The STARTTLS implementation in mail/ngx_mail_smtp_handler.c in the SMTP proxy in nginx 1.5.x and 1.6.x before 1.6.1 and 1.7.x before 1.7.4 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted SMTP 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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