CVE-2011-0411

MediumCVSS 6.8/10Last modified Jun 16, 2026

Description

The STARTTLS implementation in Postfix 2.4.x before 2.4.16, 2.5.x before 2.5.12, 2.6.x before 2.6.9, and 2.7.x before 2.7.3 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.

Metrics

CVSS 2.0 6.8/10AV:N/AC:M/Au:N/C:P/I:P/A:P

Weakness enumeration

CWE-264

Affected software

No affected versions have been published.

Timeline

Published: Mar 16, 2011
Last modified: Jun 16, 2026
NVD status: Modified

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