| Name | CVE-2014-3556 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 757196 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| nginx (PTS) | jessie, jessie (lts) | 1.6.2-5+deb8u10 | fixed |
| stretch (security) | 1.10.3-1+deb9u7 | fixed |
| stretch (lts), stretch | 1.10.3-1+deb9u8 | fixed |
| buster (security), buster, buster (lts) | 1.14.2-2+deb10u5 | fixed |
| bullseye (security), bullseye | 1.18.0-6.1+deb11u3 | fixed |
| bookworm | 1.22.1-9 | fixed |
| sid, trixie | 1.26.0-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| nginx | source | squeeze | (not affected) | | | |
| nginx | source | wheezy | (not affected) | | | |
| nginx | source | (unstable) | 1.6.1-1 | | | 757196 |
Notes
[wheezy] - nginx <not-affected> (Affects 1.5.6 - 1.7.3)
[squeeze] - nginx <not-affected> (Affects 1.5.6 - 1.7.3)
fixed in nginx 1.7.4, 1.6.1