CVE-2011-0411

postfix: SMTP commands injection during plaintext to TLS session switch

Published Mar 16, 2011 CVSS 2.0 · 6.8 Medium EPSS 16.3% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-2233-1 postfix security update
Debian DSA Debian DSA DSA-2346-1 proftpd-dfsg security update
Ubuntu USN Ubuntu USN USN-1113-1 Postfix vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
certcc
Published
Updated
Aug 6, 2024, 9:51 PM
Reserved
Jan 11, 2011, 12:00 AM
Status
Modified
Published
Mar 16, 2011, 10:55 PM
Modified
Jun 16, 2026, 11:27 PM
Severity
Moderate
Public date
Mar 5, 2011, 12:00 AM