CVE-2014-3556
F5 NGINX 1.5.6-1.6.0 - Plaintext Command Injection via STARTTLS SMTP Proxy
Title source: llmDescription
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.
References (4)
Core 4
Core References
Issue Tracking, Third Party Advisory vendor-advisory
x_refsource_hp
http://marc.info/?l=bugtraq&m=142103967620673&w=2
Issue Tracking, Third Party Advisory x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=1126891
Patch, Vendor Advisory mailing-list
x_refsource_mlist
http://mailman.nginx.org/pipermail/nginx-announce/2014/000144.html
Patch, Vendor Advisory x_refsource_confirm
http://nginx.org/download/patch.2014.starttls.txt
Scores
EPSS
0.4817
EPSS Percentile
97.8%
Details
CWE
CWE-77
Status
published
Products (1)
f5/nginx
1.5.6 - 1.6.1
Published
Dec 29, 2014
Tracked Since
Feb 18, 2026