CVE Database


Impact: Moderate
Public: 2011-05-09
Bugzilla: 699035: CVE-2011-1720 postfix (smtpd): Crash due to improper management of SASL handlers for SMTP sessions


The MITRE CVE dictionary describes this issue as:

The SMTP server in Postfix before 2.5.13, 2.6.x before 2.6.10, 2.7.x before 2.7.4, and 2.8.x before 2.8.3, when certain Cyrus SASL authentication methods are enabled, does not create a new server handle after client authentication fails, which allows remote attackers to cause a denial of service (heap memory corruption and daemon crash) or possibly execute arbitrary code via an invalid AUTH command with one method followed by an AUTH command with a different method.

Find out more about CVE-2011-1720 from the MITRE CVE dictionary and NIST NVD.

CVSS v2 metrics

Base Score: 4.3
Base Metrics: AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector: Network
Access Complexity: Medium
Authentication: None
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Partial

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 version 4 (postfix) RHSA-2011:0843 May 31, 2011
Red Hat Enterprise Linux version 5 (postfix) RHSA-2011:0843 May 31, 2011
Red Hat Enterprise Linux version 6 (postfix) RHSA-2011:0843 May 31, 2011

External References


Red Hat would like to thank the CERT/CC for reporting CVE-2011-1720. Upstream acknowledges Thomas Jarosch of Intra2net AG as the original reporter.

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.