CVE-2011-0411
The MITRE CVE dictionary describes this issue as:
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.
Find out more about CVE-2011-0411 from the MITRE CVE dictionary dictionary and NIST NVD.
Statement
This issue affected postfix packages in Red Hat Enterprise Linux 4, 5, and 6. It was corrected via RHSA-2011:0422 and RHSA-2011:0423.
This issue did not affect the versions of sendmail as shipped with Red Hat Enterprise Linux 3, 4, 5, or 6, and the versions of exim as shipped with Red Hat Enterprise Linux 4 and 5.
CVSS v2 metrics
| Base Score | 4 |
|---|---|
| Base Metrics | AV:N/AC:H/Au:N/C:P/I:P/A:N |
| Access Vector | Network |
| Access Complexity | High |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Red Hat Security Errata
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 4 (postfix) | RHSA-2011:0422 | 2011-04-06 |
| Red Hat Enterprise Linux 5 (postfix) | RHSA-2011:0422 | 2011-04-06 |
| Red Hat Enterprise Linux 6 (postfix) | RHSA-2011:0423 | 2011-04-06 |
Acknowledgements
Red Hat would like to thank the CERT/CC for reporting CVE-2011-0411. The CERT/CC acknowledges Wietse Venema as the original reporter.CVE description copyright © 2017, The MITRE Corporation