CVE-2016-0686 in Java SE
Summary
by MITRE
Unspecified vulnerability in Oracle Java SE 6u113, 7u99, and 8u77 and Java SE Embedded 8u77 allows remote attackers to affect confidentiality, integrity, and availability via vectors related to Serialization.
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Analysis
by VulDB Data Team • 07/26/2022
The vulnerability identified as CVE-2016-0686 represents a critical security flaw within Oracle Java SE and Java SE Embedded platforms affecting versions 6u113, 7u99, 8u77, and the corresponding embedded versions. This vulnerability falls under the broader category of serialization-related security issues that have historically proven to be particularly dangerous in Java environments due to the complex nature of object serialization and deserialization processes. The unspecified nature of the vulnerability description indicates that the exact technical mechanism remains classified, though the impact scope clearly demonstrates the severity of potential exploitation.
The technical flaw manifests through serialization mechanisms within the Java runtime environment, specifically targeting how objects are serialized and deserialized across network communications or file operations. Serialization vulnerabilities typically occur when the Java Virtual Machine fails to properly validate or sanitize data during the deserialization process, allowing maliciously crafted serialized objects to execute arbitrary code or manipulate system behavior. This particular vulnerability enables attackers to exploit the serialization framework to compromise system integrity and potentially gain unauthorized access to sensitive information. The weakness directly relates to CWE-502 which categorizes deserialization of untrusted data as a critical security concern, aligning with established patterns of Java-based exploitation techniques.
From an operational standpoint, this vulnerability presents significant risks to organizations utilizing affected Java versions in production environments, particularly those handling sensitive data or operating critical infrastructure. Remote attackers can potentially exploit this weakness to execute arbitrary code on target systems, leading to complete system compromise, data exfiltration, or service disruption. The impact spans all three fundamental security principles: confidentiality through potential data leakage, integrity by allowing unauthorized modifications to system state, and availability by enabling denial-of-service conditions or system crashes. The vulnerability's remote exploitability means that attackers can leverage it without requiring physical access to the target systems, making it particularly dangerous in networked environments where Java applications are exposed to external traffic.
Organizations should immediately implement comprehensive mitigation strategies including prompt patching of affected Java versions to the latest available releases, which would address the underlying serialization flaws. Network segmentation and firewall rules should be implemented to restrict unnecessary Java application access, particularly for embedded systems that may be more vulnerable due to their constrained security configurations. Additionally, organizations should consider implementing runtime application self-protection measures and monitoring for suspicious deserialization activities. The mitigation approach should align with established security frameworks such as those recommended in the ATT&CK framework under the execution and privilege escalation domains, where deserialization attacks are categorized as common attack patterns targeting Java environments. Regular security assessments and vulnerability scanning should be conducted to identify any remaining exposure points, while security teams should monitor for indicators of compromise related to exploitation attempts targeting these specific Java serialization vulnerabilities.