Ubuntu Security Notice (C) 2005-2013 Canonical, Inc. / NASL script (C) 2006-2013 Tenable Network Security, Inc.
The remote Ubuntu host is missing one or more security-related patches.
A Denial of Service vulnerability has been discovered in the Courier
mail server. Due to a flawed status code check, failed DNS (domain
name service) queries for SPF (sender policy framework) were not
handled properly and could lead to memory corruption. A malicious DNS
server could exploit this to crash the Courier server.
However, SPF is not enabled by default, so you are only vulnerable if
you explicitly enabled it.
The Ubuntu 4.10 version of courier is not affected by this.
Update the affected packages.
Risk factor :
Medium / CVSS Base Score : 5.0
Family: Ubuntu Local Security Checks
Nessus Plugin ID: 20584 ()
CVE ID: CVE-2005-2151
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