The remote Oracle Linux host is missing a security update.
From Red Hat Security Advisory 2013:1142 :
An updated thunderbird package that fixes several security issues is
now available for Red Hat Enterprise Linux 5 and 6.
The Red Hat Security Response Team has rated this update as having
important security impact. Common Vulnerability Scoring System (CVSS)
base scores, which give detailed severity ratings, are available for
each vulnerability from the CVE links in the References section.
Mozilla Thunderbird is a standalone mail and newsgroup client.
Several flaws were found in the processing of malformed content.
Malicious content could cause Thunderbird to crash or, potentially,
execute arbitrary code with the privileges of the user running
A flaw was found in the way Thunderbird generated Certificate Request
Message Format (CRMF) requests. An attacker could use this flaw to
perform cross-site scripting (XSS) attacks or execute arbitrary code
with the privileges of the user running Thunderbird. (CVE-2013-1710)
A flaw was found in the way Thunderbird handled the interaction
between frames and browser history. An attacker could use this flaw to
trick Thunderbird into treating malicious content as if it came from
the browser history, allowing for XSS attacks. (CVE-2013-1709)
It was found that the same-origin policy could be bypassed due to the
attacker could use this flaw to perform XSS attacks, or install
malicious add-ons from third-party pages. (CVE-2013-1713)
It was found that web workers could bypass the same-origin policy. An
attacker could use this flaw to perform XSS attacks. (CVE-2013-1714)
It was found that, in certain circumstances, Thunderbird incorrectly
handled Java applets. If a user launched an untrusted Java applet via
Thunderbird, the applet could use this flaw to obtain read-only access
to files on the user's local system. (CVE-2013-1717)
Red Hat would like to thank the Mozilla project for reporting these
issues. Upstream acknowledges Jeff Gilbert, Henrik Skupin,
moz_bug_r_a4, Cody Crews, Federico Lanusse, and Georgi Guninski as the
original reporters of these issues.
Note: All of the above issues cannot be exploited by a specially
mail messages. They could be exploited another way in Thunderbird, for
example, when viewing the full remote content of an RSS feed.
All Thunderbird users should upgrade to this updated package, which
contains Thunderbird version 17.0.8 ESR, which corrects these issues.
After installing the update, Thunderbird must be restarted for the
changes to take effect.
See also :
Update the affected thunderbird package.
Risk factor :
Critical / CVSS Base Score : 10.0
CVSS Temporal Score : 7.8
Public Exploit Available : true