This script is Copyright (C) 2013-2016 Tenable Network Security, Inc.
The remote Oracle Linux host is missing a security update.
From Red Hat Security Advisory 2009:1490 :
An updated squirrelmail package that fixes several security issues is
now available for Red Hat Enterprise Linux 3, 4, and 5.
This update has been rated as having moderate security impact by the
Red Hat Security Response Team.
SquirrelMail is a standards-based webmail package written in PHP.
Form submissions in SquirrelMail did not implement protection against
Cross-Site Request Forgery (CSRF) attacks. If a remote attacker
tricked a user into visiting a malicious web page, the attacker could
hijack that user's authentication, inject malicious content into that
user's preferences, or possibly send mail without that user's
Users of SquirrelMail should upgrade to this updated package, which
contains a backported patch to correct these issues.
See also :
Update the affected squirrelmail package.
Risk factor :
Medium / CVSS Base Score : 6.8
CVSS Temporal Score : 5.9
Public Exploit Available : true