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 v2.0 Score
6.8
/ 10.0
MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
Information
- Published
- 29 déc. 2014
- Updated
- 12 avr. 2025
- Status
- Deferred
- Source
- secalert@redhat.com
Affected products
f5 nginxAll nginx CVEs →
Versions : 1.6.1, 1.7.4
Weaknesses (CWE)
CWE-77
References (8)
- http://mailman.nginx.org/pipermail/nginx-announce/2014/000144.htmlPatchVendor Advisory
- http://marc.info/?l=bugtraq&m=142103967620673&w=2Issue TrackingThird Party Advisory
- http://nginx.org/download/patch.2014.starttls.txtPatchVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1126891Issue TrackingThird Party Advisory
- http://mailman.nginx.org/pipermail/nginx-announce/2014/000144.htmlPatchVendor Advisory
- http://marc.info/?l=bugtraq&m=142103967620673&w=2Issue TrackingThird Party Advisory
- http://nginx.org/download/patch.2014.starttls.txtPatchVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1126891Issue TrackingThird Party Advisory
Similar CVEs
Other vulnerabilities of type CWE-77
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