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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.
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.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
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OR
*cpe:2.3:a:nginx:nginx:*:*:*:*:*:*:*:* versions from (including) 1.5.6 up to (excluding) 1.6.1
*cpe:2.3:a:nginx:nginx:*:*:*:*:*:*:*:* versions from (including) 1.7.0 up to (excluding) 1.7.4
Added
CVSS V2
NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
Removed
CVSS V2
NIST (AV:N/AC:M/Au:N/C:P/I:N/A:N)
Removed
CVSS V2 Metadata
Victim must voluntarily interact with attack mechanism
Changed
Reference Type
http://marc.info/?l=bugtraq&m=142103967620673&w=2 No Types Assigned
http://marc.info/?l=bugtraq&m=142103967620673&w=2 Issue Tracking, Third Party Advisory
Changed
Reference Type
http://nginx.org/download/patch.2014.starttls.txt No Types Assigned
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