SB2011031701 - Permissions, Privileges, and Access Controls in Postfix

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Main Vulnerability Database SB2011031701

SB2011031701 - Permissions, Privileges, and Access Controls in Postfix

Published: March 17, 2011 Updated: June 8, 2025

Security Bulletin ID SB2011031701
Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Man-in-the-Middle (MitM) attack (CVE-ID: CVE-2011-0411)

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to incorrect implementation of STARTTLS command that 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

Install update from vendor's website.

References