CVE-2013-5840 in Java SE
Summary
by MITRE
Unspecified vulnerability in Oracle Java SE 7u40 and earlier, Java SE 6u60 and earlier, Java SE 5.0u51 and earlier, and Java SE Embedded 7u40 and earlier allows remote attackers to affect confidentiality via unknown vectors related to Libraries.
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Analysis
by VulDB Data Team • 05/31/2021
The vulnerability identified as CVE-2013-5840 represents a significant security weakness within Oracle Java SE and Java SE Embedded platforms affecting multiple versions including Java SE 7u40 and earlier, Java SE 6u60 and earlier, Java SE 5.0u51 and earlier, and Java SE Embedded 7u40 and earlier. This unspecified flaw resides within the libraries component of the Java runtime environment, making it particularly concerning given the widespread deployment of Java across enterprise and consumer systems. The vulnerability's classification as affecting confidentiality indicates potential data exposure risks that could compromise sensitive information processed through affected Java implementations. Security researchers have categorized this issue under the broader context of Java library vulnerabilities that can be exploited remotely without requiring local access privileges.
The technical nature of this vulnerability stems from weaknesses within the Java library components that handle various security operations and data processing functions. Attackers can exploit this flaw through remote vectors, meaning malicious actors do not need physical access to target systems to execute exploitation. The unspecified nature of the exact attack vector suggests that multiple pathways may exist for exploitation, potentially including memory corruption issues, improper input validation, or insecure library function calls. This ambiguity in the vulnerability description often complicates the development of precise defensive strategies and requires comprehensive monitoring of network traffic and system behavior for potential exploitation attempts. The vulnerability's presence in multiple Java versions demonstrates a systemic issue within the library implementations that affects the entire Java ecosystem rather than isolated components.
The operational impact of CVE-2013-5840 extends beyond simple data confidentiality breaches, potentially enabling attackers to access sensitive information, manipulate system behavior, or establish persistent access points within affected environments. Organizations running vulnerable Java implementations face significant risks including data theft, system compromise, and potential lateral movement within network infrastructures. The remote exploit capability means that attackers can target systems from anywhere on the internet, making this vulnerability particularly dangerous for organizations with exposed Java applications or services. This vulnerability aligns with ATT&CK technique T1190 for Exploit Public-Facing Application, as it represents an attack surface that can be exploited through publicly accessible Java applications. The widespread use of Java in enterprise environments, web applications, and embedded systems amplifies the potential impact of this vulnerability across diverse threat scenarios.
Mitigation strategies for CVE-2013-5840 require immediate action including patching all affected Java installations to the latest available versions from Oracle. Organizations should implement comprehensive vulnerability scanning to identify all systems running vulnerable Java versions and prioritize remediation efforts accordingly. Network segmentation and firewall rules should be implemented to restrict access to Java applications where possible, while also monitoring for anomalous network traffic patterns that might indicate exploitation attempts. Security teams should also consider disabling unnecessary Java applets and browser plugins to reduce attack surface. The vulnerability demonstrates the importance of maintaining up-to-date security patches and following the principle of least privilege in Java application deployment. Organizations should also review their Java application security configurations and implement additional monitoring controls to detect potential exploitation attempts. This vulnerability serves as a reminder of the critical importance of regular security assessments and timely patch management across all Java runtime environments, particularly those running older versions that may have extended support windows but remain vulnerable to known exploits.