Arbitrary Command Injection Affecting nginx package, versions <1.6.1-1
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Test your applications- Snyk ID SNYK-DEBIAN9-NGINX-341042
- published 29 Dec 2014
- disclosed 29 Dec 2014
Introduced: 29 Dec 2014
CVE-2014-3556 Open this link in a new tabHow to fix?
Upgrade Debian:9 nginx to version 1.6.1-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream nginx package and not the nginx package as distributed by Debian.
See How to fix? for Debian:9 relevant fixed versions and status.
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.