ID

VAR-200503-0071

CVE

CVE-2004-1029

TITLE

Sun Java Plug-in fails to restrict access to private Java packages

DESCRIPTION

The Sun Java Plugin capability in Java 2 Runtime Environment (JRE) 1.4.2_01, 1.4.2_04, and possibly earlier versions, does not properly restrict access between Javascript and Java applets during data transfer, which allows remote attackers to load unsafe classes and execute arbitrary code by using the reflection API to access private Java packages. There is a vulnerability in the Sun Java Plug-in that could allow a malicious Java applet to bypass restrictions for untrusted applets. Multiple vulnerabilities exist in numerous Oracle products. The impacts of these vulnerabilities are varied and may include remote execution of arbitrary code, the disclosure of sensitive information, and denial-of-service conditions. various Oracle Multiple vulnerabilities exist in the product and its components.Although it depends on the target product, a third party can execute any command or code remotely, leak information in the database, disrupt service operation ( Denial-of-Service,DoS ) Attacks could be made. Reports indicate that it is possible for a malicious website that contains JavaScript code to exploit this vulnerability to load a dangerous Java class and to pass this class to an invoked applet. If a vulnerable version is still installed on the computer, it may be possible for to specify that this version runs the applet instead of an updated version that is not prone to the vulnerability. Users affected by this vulnerability should remove earlier versions of the plug-in. This functionality could also be abused to prompt users to install vulnerable versions of the plug-in, so users should be wary of doing so. This general security weakness has been assigned an individual BID (11757). Various Oracle Database Server, Oracle Enterprise Manager, Oracle Application Server, Oracle Collaboration Suite, Oracle E-Business Suite and Applications, Oracle Workflow, Oracle Forms and Reports, Oracle JInitiator, Oracle Developer Suite, and Oracle Express Server are affected by multiple vulnerabilities. The issues identified by the vendor affect all security properties of the Oracle products and present local and remote threats. Oracle has released a Critical Patch Update advisory for July 2005 to address these vulnerabilities. This Critical Patch Update addresses the vulnerabilities for supported releases. Earlier, unsupported releases are likely to be affected by the issues as well. The issue is that documents may be served with weaker SSL encryption than configured in Oracle HTTP Server. This could result in a false sense of security. Oracle has not released any further information about this weakness. The first issue can allow an untrusted applet to escalate its privileges to access resources with the privilege level of the user running the applet. This issue occurs only in Internet Explorer running on Windows. The second issue allows an untrusted applet to interfere with another applet embedded in the same web page. This issue occurs in Java running on Windows, Solaris, and Linux. A remote attacker can use this vulnerability to bypass the Java\'\'sandbox\'\' and all restrictions to access restricted resources and systems. BACKGROUND Java Plug-in technology, included as part of the Java 2 Runtime Environment, Standard Edition (JRE), establishes a connection between popular browsers and the Java platform. This connection enables applets on Web sites to be run within a browser on the desktop. II. A number of private Java packages exist within the Java Virtual Machine (VM) and are used internally by the VM. Security restrictions prevent Applets from accessing these packages. Any attempt to access these packages, results in a thrown exception of 'AccessControlException', unless the Applet is signed and the user has chosen to trust the issuer. III. ANALYSIS Successful exploitation allows remote attackers to execute hostile Applets that can access, download, upload or execute arbitrary files as well as access the network. A target user must be running a browser on top of a vulnerable Java Virtual Machine to be affected. It is possible for an attacker to create a cross-platform, cross-browser exploit for this vulnerability. Once compromised, an attacker can execute arbitrary code under the privileges of the user who instantiated the vulnerable browser. IV. DETECTION iDEFENSE has confirmed the existence of this vulnerability in Java 2 Platform, Standard Edition (J2SE) 1.4.2_01 and 1.4.2_04 from Sun Microsystems. Various browsers such as Internet Explorer, Mozilla and Firefox on both Windows and Unix platforms can be exploited if they are running a vulnerable Java Virtual Machine. V. Other Java Virtual Machines, such as the Microsoft VM, are available and can be used as an alternative. VI. VENDOR RESPONSE This issue has been fixed in J2SE v 1.4.2_06 available at: [15]http://java.sun.com/j2se/1.4.2/download.html VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CAN-2004-1029 to this issue. This is a candidate for inclusion in the CVE list ([16]http://cve.mitre.org), which standardizes names for security problems. VIII. DISCLOSURE TIMELINE 06/29/2004 Initial vendor notification 06/30/2004 Initial vendor response 08/16/2004 iDEFENSE clients notified 11/22/2004 Public disclosure IX. CREDIT Jouko Pynnonen (jouko[at]iki.fi) is credited with this discovery. Get paid for vulnerability research [17]http://www.idefense.com/poi/teams/vcp.jsp X. LEGAL NOTICES Copyright \xa9 2004 iDEFENSE, Inc. Permission is granted for the redistribution of this alert electronically. It may not be edited in any way without the express written consent of iDEFENSE. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please email [18]customerservice@idefense.com for permission. Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

network

TYPE

Access Validation Error

CONFIGURATIONS

EXPLOIT AVAILABILITY

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Jouko Pynnonen jouko@iki.fi

SOURCES

LAST UPDATE DATE

2024-09-22T21:31:37.643000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE