Message-ID: <50D45685.6000706@hp.com>
Date: Fri, 21 Dec 2012 06:31:01 -0600
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: Full Disclosure <full-disclosure@...ts.grok.org.uk>, 
	BugTraq <bugtraq@...urityfocus.com>, zdi-disclosures@...com
Subject: ZDI-12-189 : Oracle Java WebStart Changing System
 Properties Remote Code Execution Vulnerability

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ZDI-12-189 : Oracle Java WebStart Changing System Properties Remote Code
Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-189
December 21, 2012

- -- CVE ID:
CVE-2012-1721

- -- CVSS:
9, AV:N/AC:L/Au:N/C:P/I:P/A:C

- -- Affected Vendors:
Oracle

- -- Affected Products:
Oracle Java Runtime


- -- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Oracle Java. User interaction is required to
exploit this vulnerability in that the target must visit a malicious page
or open a malicious file.

The specific flaw exists because it is possible to change system properties
through trusted JNLP files. If a JNLP file requests "<all-permissions/>"
and only references signed, trusted JAR files, it can set all System
properties. By referencing a trusted JNLP file from an untrusted one it is
possible to change System Properties that can lead to remote code execution
under the context of the current user.


- -- Vendor Response:
Oracle has issued an update to correct this vulnerability. More details can
be found at:
http://www.oracle.com/technetwork/topics/security/javacpujun2012-1515912.ht
ml


- -- Disclosure Timeline:
2012-03-14 - Vulnerability reported to vendor
2012-12-21 - Coordinated public release of advisory

- -- Credit:
This vulnerability was discovered by:
* Chris Ries

- -- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

     http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is
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exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:

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