The remote Oracle Linux host is missing one or more security updates.
From Red Hat Security Advisory 2009:0315 :
An updated firefox package that fixes various security issues is now
available for Red Hat Enterprise Linux 4 and 5.
This update has been rated as having critical security impact by the
Red Hat Security Response Team.
Mozilla Firefox is an open source Web browser.
Several flaws were found in the processing of malformed web content. A
web page containing malicious content could cause Firefox to crash or,
potentially, execute arbitrary code as the user running Firefox.
(CVE-2009-0040, CVE-2009-0771, CVE-2009-0772, CVE-2009-0773,
Several flaws were found in the way malformed content was processed. A
website containing specially crafted content could, potentially, trick
a Firefox user into surrendering sensitive information.
For technical details regarding these flaws, please see the Mozilla
security advisories for Firefox 3.0.7. You can find a link to the
Mozilla advisories in the References section of this errata.
All Firefox users should upgrade to these updated packages, which
contain Firefox version 3.0.7, and which correct these issues. After
installing the update, Firefox must be restarted for the changes to
See also :
Update the affected firefox packages.
Risk factor :
Critical / CVSS Base Score : 10.0
CVSS Temporal Score : 8.7
Public Exploit Available : true