6.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
0.002 Low
EPSS
Percentile
52.8%
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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 12 | all | nginx | < 1.6.1-1 | nginx_1.6.1-1_all.deb |
Debian | 11 | all | nginx | < 1.6.1-1 | nginx_1.6.1-1_all.deb |
Debian | 10 | all | nginx | < 1.6.1-1 | nginx_1.6.1-1_all.deb |
Debian | 999 | all | nginx | < 1.6.1-1 | nginx_1.6.1-1_all.deb |
Debian | 13 | all | nginx | < 1.6.1-1 | nginx_1.6.1-1_all.deb |