Original release date: January 10, 2013
Last revised: --
Systems Affected
Any system
using Oracle Java 7 (1.7, 1.7.0) including
* Java
Platform Standard Edition 7 (Java SE 7)
* Java SE
Development Kit (JDK 7)
* Java SE
Runtime Environment (JRE 7)
All versions
of Java 7 through update 10 are affected.
Web
browsers using
the Java 7 plug-in are at high risk.
Overview
A vulnerability
in the way Java 7 restricts the permissions of Java
applets could
allow an attacker to execute arbitrary commands on a
vulnerable
system.
Description
A vulnerability
in the Java Security Manager allows a Java applet
to grant itself
permission to execute arbitrary code. An attacker
could use social
engineering techniques to entice a user to visit a
link to a
website hosting a malicious Java applet. An attacker
could also
compromise a legitimate web site and upload a malicious
Java applet (a
"drive-by download" attack).
Any web browser
using the Java 7 plug-in is affected. The Java
Deployment
Toolkit plug-in and Java Web Start can also be used as
attack vectors.
Reports indicate
this vulnerability is being actively exploited,
and exploit code
is publicly available.
Further
technical details are available in Vulnerability Note
VU#625617.
Impact
By convincing a
user to load a malicious Java applet or Java
Network
Launching Protocol (JNLP) file, an attacker could execute
arbitrary code
on a vulnerable system with the privileges of the
Java plug-in
process.
Solution
Disable Java in
web browsers
This and
previous Java vulnerabilities have been widely targeted by
attackers, and
new Java vulnerabilities are likely to be
discovered. To
defend against this and future Java vulnerabilities,
disable Java in
web browsers.
Starting with
Java 7 Update 10, it is possible to disable Java
content in web
browsers through the Java control panel applet. From
Setting the
Security Level of the Java Client:
For
installations where the highest level of security is required,
it is possible
to entirely prevent any Java apps (signed or
unsigned) from
running in a browser by de-selecting Enable Java
content in the
browser in the Java Control Panel under the Security
tab.
If you are
unable to update to Java 7 Update 10 please see the
solution section
of Vulnerability Note VU#636312 for instructions
on how to
disable Java on a per browser basis.