The remote Oracle Linux host is missing a security update.
From Red Hat Security Advisory 2009:1125 :
An updated thunderbird package that fixes several security issues is
now available for Red Hat Enterprise Linux 4.
This update has been rated as having moderate security impact by the
Red Hat Security Response Team.
Mozilla Thunderbird is a standalone mail and newsgroup client.
Several flaws were found in the processing of malformed HTML mail
content. An HTML mail message containing malicious content could cause
Thunderbird to crash or, potentially, execute arbitrary code as the
user running Thunderbird. (CVE-2009-1392, CVE-2009-1303,
CVE-2009-1305, CVE-2009-1833, CVE-2009-1838)
Several flaws were found in the way malformed HTML mail content was
processed. An HTML mail message containing malicious content could
possibly presenting misleading data to the user, or stealing sensitive
information such as login credentials. (CVE-2009-1306, CVE-2009-1307,
All Thunderbird users should upgrade to this updated package, which
resolves these issues. All running instances of Thunderbird must be
restarted for the update to take effect.
See also :
Update the affected thunderbird package.
Risk factor :
High / CVSS Base Score : 9.3
CVSS Temporal Score : 7.3
Public Exploit Available : true