CVE-2014-3556 — Command Injection in F5 Nginx

CWE-77 — Command Injection8 documents7 sources
Severity
6.8MEDIUMNVD
EPSS
48.2%
top 2.26%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
F5 Nginx
Timeline
PublishedDec 29
Latest updateMay 13

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.

CVSS vector

AV:N/AC:M/C:P/I:P/A:PExploitability: 8.6 | Impact: 6.4

Affected Packages2 packages

▶NVDf5/nginx1.5.6 — 1.6.1+1
▶Debianf5/nginx< 1.6.1-1+3

Patches

Patch: mailman.nginx.org ↗Patch: nginx.org ↗Patch: mailman.nginx.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-8277-2g6w-24gq: The STARTTLS implementation in mail/ngx_mail_smtp_handler↗2022-05-13
▶
OSV
CVE-2014-3556: The STARTTLS implementation in mail/ngx_mail_smtp_handler↗2014-12-29
▶
CVEList
CVE-2014-3556: The STARTTLS implementation in mail/ngx_mail_smtp_handler↗2014-12-29
▶

📋Vendor Advisories

2
Red Hat
nginx: SMTP STARTTLS plaintext injection flaw↗2014-08-05
▶
Debian
CVE-2014-3556: nginx - The STARTTLS implementation in mail/ngx_mail_smtp_handler.c in the SMTP proxy in...↗2014
▶

💬Community

2
Bugzilla
CVE-2014-3556 nginx: SMTP STARTTLS plaintext injection flaw↗2014-08-05
▶
Bugzilla
CVE-2014-3556 nginx: SMTP STARTTLS plaintext injection flaw [epel-7]↗2014-08-05
▶
CVE-2014-3556 — Command Injection in F5 Nginx | cvebase