CVE-2008-2086 in SDKJDK
Summary
by MITRE
Sun Java Web Start and Java Plug-in for JDK and JRE 6 Update 10 and earlier; JDK and JRE 5.0 Update 16 and earlier; and SDK and JRE 1.4.2_18 and earlier allow remote attackers to execute arbitrary code via a crafted jnlp file that modifies the (1) java.home, (2) java.ext.dirs, or (3) user.home System Properties, aka "Java Web Start File Inclusion" and CR 6694892.
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Analysis
by VulDB Data Team • 08/21/2019
The vulnerability identified as CVE-2008-2086 represents a critical security flaw in Sun Java Web Start and Java Plug-in components across multiple Java runtime environments. This vulnerability specifically affects JDK and JRE versions 6 Update 10 and earlier, JDK and JRE 5.0 Update 16 and earlier, as well as SDK and JRE 1.4.2_18 and earlier versions. The flaw enables remote attackers to execute arbitrary code through manipulation of crafted jnlp files that exploit system property modifications.
The technical exploitation occurs through manipulation of three critical system properties: java.home, java.ext.dirs, and user.home. These properties control fundamental aspects of the Java runtime environment including the Java home directory, extension directories, and user home directory respectively. When attackers craft malicious jnlp files that modify these properties, they can effectively bypass security restrictions and gain unauthorized access to system resources. This represents a privilege escalation vulnerability that allows attackers to execute code with the privileges of the Java runtime process.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise. Attackers can leverage this flaw to install malware, modify system files, access sensitive data, and potentially establish persistent backdoors. The vulnerability affects both web-based Java applets through the Java Plug-in and desktop applications launched via Java Web Start. This dual attack surface increases the exploitability and potential damage of the vulnerability.
From a cybersecurity perspective, this vulnerability maps directly to CWE-74 and CWE-75 categories related to injection flaws and improper neutralization of special elements used in object references. The attack vector aligns with ATT&CK technique T1059.007 for command and script injection, and T1068 for exploit for privilege escalation. The vulnerability demonstrates the dangerous nature of Java's trust model and how manipulation of system properties can bypass security boundaries. Organizations using affected Java versions face significant risk of compromise, particularly those running legacy systems or environments with limited patch management capabilities.
Mitigation strategies should include immediate patching of affected Java versions, implementation of network-based restrictions on jnlp file execution, and deployment of application whitelisting controls. System administrators should also consider disabling Java Web Start and Java Plug-in functionality in web browsers where possible, and implement strict network segmentation to limit the potential impact of successful exploitation. Regular security assessments and vulnerability scanning should be conducted to identify and remediate similar vulnerabilities in the Java runtime environment.