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Overview

Vulnerability Score 4.3 4.3
CVE Id CVE-2014-3556
Last Modified 16 Mar 2015 10:00:04
Published 29 Dec 2014 03:59:03
Confidentiality Impact PARTIAL PARTIAL
Integrity Impact NONE NONE
Availability Impact NONE NONE
Access Vector NETWORK
Access Complexity MEDIUM
Authentication NONE

CVE-2014-3556

Summary

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.

Vulnerable Systems

Application

  • Nginx 1.5.0

  • Nginx 1.5.1

  • Nginx 1.5.10

  • Nginx 1.5.11

  • Nginx 1.5.12

  • Nginx 1.5.2

  • Nginx 1.5.3

  • Nginx 1.5.4

  • Nginx 1.5.5

  • Nginx 1.5.6

  • Nginx 1.5.7

  • Nginx 1.5.8

  • Nginx 1.5.9

  • Nginx 1.6.0

  • Nginx 1.6.1

  • Nginx 1.7.0

  • Nginx 1.7.1

  • Nginx 1.7.2

  • Nginx 1.7.3


References

CONFIRM - https://bugzilla.redhat.com/show_bug.cgi?id=1126891

CONFIRM - http://nginx.org/download/patch.2014.starttls.txt

MLIST - [nginx-announce] 20140805 nginx security advisory (CVE-2014-3556)

HP - HPSBOV03227


Last Updated: 27 May 2016 11:07:22