CVE-2016-0264 in Java Virtual Machine
Summary
by MITRE
Buffer overflow in the Java Virtual Machine (JVM) in IBM SDK, Java Technology Edition 6 before SR16 FP25 (6.0.16.25), 6 R1 before SR8 FP25 (6.1.8.25), 7 before SR9 FP40 (7.0.9.40), 7 R1 before SR3 FP40 (7.1.3.40), and 8 before SR3 (8.0.3.0) allows remote attackers to execute arbitrary code via unspecified vectors.
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Analysis
by VulDB Data Team • 08/22/2022
The vulnerability identified as CVE-2016-0264 represents a critical buffer overflow flaw within the Java Virtual Machine implementation of IBM's SDK for Java Technology Edition. This security weakness affects multiple versions of the Java platform including versions 6, 6 R1, 7, 7 R1, and 8 across various service release and fix pack combinations. The flaw resides in the JVM's handling of memory allocation and data processing operations that could potentially be exploited by remote attackers to gain unauthorized code execution capabilities. The vulnerability's classification as a buffer overflow aligns with CWE-121, which describes conditions where insufficient bounds checking allows attackers to write beyond allocated memory regions. This particular vulnerability demonstrates the inherent risks associated with memory management in virtual machine implementations where improper buffer handling can lead to complete system compromise.
The technical exploitation of this buffer overflow vulnerability occurs through unspecified vectors that leverage the JVM's memory management mechanisms. Attackers can potentially craft malicious input or code sequences that cause the JVM to write data beyond the boundaries of allocated buffers, leading to memory corruption and arbitrary code execution. The vulnerability's impact is particularly severe because it affects the core JVM functionality that serves as the foundation for Java applications across numerous enterprise environments. The flaw's presence in multiple Java versions indicates a systemic issue within IBM's implementation rather than an isolated occurrence, suggesting that the underlying memory management routines were fundamentally flawed in their approach to buffer allocation and validation. The unspecified vectors indicate that the attack surface may be broader than initially apparent, potentially encompassing various input processing pathways within the JVM's runtime environment.
The operational impact of CVE-2016-0264 extends beyond simple code execution capabilities to encompass complete system compromise and data breaches. Organizations running affected Java versions face significant risk of unauthorized access to their systems, potentially allowing attackers to escalate privileges, install backdoors, or exfiltrate sensitive information. The vulnerability's remote exploitation capability means that attackers need not have physical access to target systems, making it particularly dangerous in networked environments where Java applications are deployed. This vulnerability directly impacts the CIA triad by compromising confidentiality through potential data access, integrity through code injection, and availability through system compromise. The attack vector implications align with ATT&CK technique T1059, which covers command and scripting interpreter usage, and T1068, which addresses exploit for privilege escalation. The widespread nature of Java deployments across enterprise environments makes this vulnerability particularly impactful, as a single compromised system could potentially serve as a foothold for broader network infiltration.
Organizations affected by this vulnerability should prioritize immediate remediation through the application of IBM's security fix packs and service releases. The recommended mitigation strategy involves upgrading to IBM SDK versions that include the patched JVM implementations, specifically targeting SR16 FP25 for Java 6, SR8 FP25 for Java 6 R1, SR9 FP40 for Java 7, SR3 FP40 for Java 7 R1, and SR3 for Java 8. System administrators should also implement network segmentation and monitoring to detect potential exploitation attempts, as the unspecified nature of the attack vectors makes traditional signature-based detection challenging. Additional defensive measures include implementing application whitelisting policies to restrict execution of untrusted Java code, configuring firewalls to limit Java-related network traffic, and conducting thorough vulnerability assessments to identify systems running affected Java versions. The vulnerability underscores the importance of maintaining up-to-date security patches and demonstrates the critical need for continuous monitoring of third-party software components, particularly those that form the foundation of enterprise computing environments. Organizations should also consider implementing runtime application self-protection mechanisms and enhanced logging to detect anomalous behavior that might indicate exploitation attempts.