CVE-2008-1196 in JRE
Summary
by MITRE
Stack-based buffer overflow in Java Web Start (javaws.exe) in Sun JDK and JRE 6 Update 4 and earlier and 5.0 Update 14 and earlier; and SDK and JRE 1.4.2_16 and earlier; allows remote attackers to execute arbitrary code via a crafted JNLP file.
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Analysis
by VulDB Data Team • 12/11/2024
The vulnerability identified as CVE-2008-1196 represents a critical stack-based buffer overflow affecting Java Web Start functionality within multiple versions of Sun's Java Development Kit and Java Runtime Environment. This flaw specifically targets the javaws.exe executable component that processes Java Network Launch Protocol files, commonly known as JNLP files used to launch java applications over networks. The vulnerability exists across multiple Java versions including JDK/JRE 6 Update 4 and earlier, 5.0 Update 14 and earlier, and SDK/JRE 1.4.2_16 and earlier versions, making it particularly widespread in enterprise environments where legacy java applications remain operational.
The technical exploitation of this vulnerability occurs through the improper handling of input data within the javaws.exe process when processing maliciously crafted JNLP files. When a user opens a specially constructed JNLP file, the application fails to properly validate the size of input data before copying it into a fixed-size stack buffer. This buffer overflow condition allows an attacker to overwrite adjacent memory locations including return addresses and control data, effectively enabling arbitrary code execution with the privileges of the victim user. The vulnerability is classified as a stack-based buffer overflow under CWE-121, which specifically addresses buffer overflow conditions where data is written beyond the bounds of a stack allocated buffer. This type of vulnerability directly maps to ATT&CK technique T1059.007 for command and scripting interpreter and T1203 for Exploitation for Client Execution, as it enables remote code execution through client-side application exploitation.
The operational impact of this vulnerability extends far beyond simple code execution, as it provides attackers with complete system compromise capabilities when users interact with malicious JNLP files. Organizations running affected Java versions face significant risk exposure since JNLP files can be distributed through web portals, email attachments, or malicious websites, making the attack surface extremely broad. The vulnerability's remote exploitability means that attackers can leverage this flaw without requiring local system access, making it particularly dangerous for enterprise environments where users frequently interact with external web content. Additionally, the widespread adoption of Java Web Start across various applications and platforms increases the likelihood of successful exploitation, as many legitimate applications utilize this launch mechanism for distributing java applications.
Mitigation strategies for CVE-2008-1196 should prioritize immediate patching of all affected Java installations to the latest available versions, as Sun released updates addressing this specific vulnerability. Organizations should implement strict file type filtering and validation for JNLP files, particularly those originating from untrusted sources, and consider disabling Java Web Start functionality entirely if not required for business operations. Network-based mitigations include implementing web application firewalls to block suspicious JNLP file downloads and employing content filtering solutions that can identify and quarantine potentially malicious launch files. Security monitoring should focus on detecting unusual javaws.exe process execution patterns and anomalous network connections that may indicate exploitation attempts. The vulnerability demonstrates the critical importance of maintaining current Java installations and implementing defense-in-depth strategies, as it represents a classic example of how client-side application vulnerabilities can lead to complete system compromise. Organizations should also consider implementing application whitelisting policies that restrict execution of javaws.exe to only trusted applications and environments, thereby reducing the attack surface for this particular exploit vector.