VULNERABILITY INTELLIGENCE
CVE-2011-1431
CVSS score6.8 MEDIUM
EPSS probability4.59%
CISA KEVNot currently listed
Published2011-03-16
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:P/I:P/A:P
Description
The STARTTLS implementation in qmail-smtpd.c in qmail-smtpd in the netqmail-1.06-tls patch for netqmail 1.06 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.
Primary references
- cve@mitre.org — Patch
- cve@mitre.org
- cve@mitre.org — US Government Resource
- cve@mitre.org — US Government Resource
- cve@mitre.org — Exploit, Vendor Advisory
- cve@mitre.org — Exploit
- cve@mitre.org
- cve@mitre.org — Vendor Advisory
- cve@mitre.org
- af854a3a-2127-422b-91ae-364da2661108 — Patch
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108 — US Government Resource