CVE-2014-3556 Other in n/a

What is CVE-2014-3556?

CVE-2014-3556 is a medium-severity vulnerability in n/a, published on 29 Dec 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-77

Which versions are affected by CVE-2014-3556?

It affects 1 product.

Products include F5 Nginx.

How do I fix CVE-2014-3556?

Upgrade to a fixed version.

Is CVE-2014-3556 being exploited?

There is no known exploitation of CVE-2014-3556 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2016-1247 Path traversal in n/a High 7.8
• CVE-2021-23017 Memory corruption in Nginx Web Server, Nginx Plus High 7.7
• CVE-2014-0088 Memory corruption in n/a High 7.5
• CVE-2014-0133 Memory corruption in n/a High 7.5
• CVE-2013-4547 Security feature bypass in n/a High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2014-3556, GHSA-8277-2g6w-24gq.