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AUSCERT Security Bulletin
ASB-2013.0034
New vulnerabilities in Java Runtime Environment can result
in arbitrary code execution
5 March 2013
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AusCERT Security Bulletin Summary
---------------------------------
Product: Oracle Java
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2013-1493 CVE-2013-0809
Member content until: Thursday, April 4 2013
Comment: Oracle has stated that they have received reports of CVE-2013-1493
being exploited in the wild. AusCERT recommends that administrators
apply the updates as soon as possible.
OVERVIEW
New vulnerabilities have been discovered in the Java Runtime
Environment component of Oracle Java SE, which can result in arbitrary
code execution in all previous versions of Java. [1, 2]
IMPACT
Oracle advises that these vulnerabilities may be remotely expoited
without authentication. Oracle advises that: "For an exploit to be
successful, an unsuspecting user running an affected release in a
browser must visit a malicious web page that leverages these
vulnerabilities." [1]
Furthermore, Oracle notes that: "Successful attack of this vulnerability
can result in unauthorized Operating System takeover including arbitrary
code execution." [2]
Oracle also notes that: "This vulnerability can be exploited only through
untrusted Java Web Start applications and untrusted Java applets." [2]
MITIGATION
Oracle strongly recommends that customers update to the latest version
of Java - JDK 7 Update 17 as soon as possible. [1]
JDK 6 Update 43 has been made available by Oracle to mitigate these
vulnerabilities for those customers who have not migrated to JDK 7. [3]
However, Oracle notes that: "This release is the last of publicly
available JDK 6 Updates. Oracle recommends that users migrate to JDK 7
in order to continue receiving public updates and security
enhancements." [3]
REFERENCES
[1] Oracle Security Alert for CVE-2013-1493
http://www.oracle.com/technetwork/topics/security/alert-cve-2013-1493-1915081.html
[2] Text Form of Oracle Security Alert - CVE-2013-1493 Risk Matrices
http://www.oracle.com/technetwork/topics/security/alert-cve-2013-1493verbose-1915091.html
[3] Update Release Notes
http://www.oracle.com/technetwork/java/javase/6u43-relnotes-1915290.html
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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