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Zero Day Initiative Advisory 12-081

Zero Day Initiative Advisory 12-081
Posted Jun 6, 2012
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 12-081 - 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 in the Java GlueGen library. This library is not installed by default with Java, but it is available as a signed .jar package. The affected jar files are signed with a certificate that is trusted by default JRE installs and as such are downloaded and run without user interaction. Crafted Java applets can reach a call to 'openLibraryGlobal' in the GlueGen library that allow remote .dll files to be loaded into the JRE process. This can lead to remote code execution under the context of the current process.

tags | advisory, java, remote, arbitrary, code execution
MD5 | 0d344f8cbd825fc95e5abec348e76408

Zero Day Initiative Advisory 12-081

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Hash: SHA1

ZDI-12-081 : Oracle Java GlueGen Arbitrary Native Library Loading Remote
Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-081
June 6, 2012

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

- -- 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 in the Java GlueGen library. This library is not
installed by default with Java, but it is available as a signed .jar
package. The affected jar files are signed with a certificate that is
trusted by default JRE installs and as such are downloaded and run without
user interaction. Crafted Java applets can reach a call to
'openLibraryGlobal' in the GlueGen library that allow remote .dll files to
be loaded into the JRE process. This can lead to remote code execution
under the context of the current process.

- -- Vendor Response:

Oracle has issued an update to correct this vulnerability. More details can
be found at:

http://www.oracle.com/technetwork/topics/security/javacpufeb2012-366318.htm
l


- -- Disclosure Timeline:
2011-12-22 - Vulnerability reported to vendor

2012-06-06 - 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
used. TippingPoint does not re-sell the vulnerability details or any
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:

http://www.zerodayinitiative.com/advisories/disclosure_policy/

Follow the ZDI on Twitter:

http://twitter.com/thezdi

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