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prionPRIOn knowledge basePRION:CVE-2014-3556
HistoryDec 29, 2014 - 8:59 p.m.

Command injection

2014-12-2920:59:00
PRIOn knowledge base
www.prio-n.com
12

6.7 Medium

AI Score

Confidence

Low

0.011 Low

EPSS

Percentile

84.8%

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.

CPENameOperatorVersion
nginxge1.7.0
nginxlt1.7.4
nginxge1.5.6
nginxlt1.6.1