CVE-2013-4041 in Java
Summary
by MITRE
Unspecified vulnerability in IBM Java SDK 5.0.0 before SR16 FP4, 7.0.0 before SR6, 6.0.1 before SR7, and 6.0.0 before SR15 allows remote attackers to access restricted classes via unspecified vectors.
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Analysis
by VulDB Data Team • 06/01/2021
The vulnerability identified as CVE-2013-4041 represents a critical security flaw within IBM Java SDK implementations across multiple versions including 5.0.0 before SR16 FP4, 7.0.0 before SR6, 6.0.1 before SR7, and 6.0.0 before SR15. This unspecified vulnerability creates a pathway for remote attackers to gain unauthorized access to restricted classes within the Java runtime environment, potentially compromising the integrity and confidentiality of applications running on these platforms. The flaw exists in the class loading and access control mechanisms of the IBM Java Virtual Machine, which should normally enforce strict boundaries between privileged system classes and user application code. The vulnerability falls under the broader category of privilege escalation and access control bypass issues that are particularly dangerous in server-side applications where Java SDKs are commonly deployed. According to CWE classification, this vulnerability maps to CWE-284 Access Control Issues, specifically representing inadequate access control mechanisms that allow unauthorized access to restricted resources. The ATT&CK framework categorizes this under privilege escalation techniques where adversaries leverage flaws in access control to gain elevated privileges within the Java runtime environment.
The technical nature of this vulnerability stems from insufficient validation of class access requests within the IBM Java SDK implementation. When applications attempt to load or access specific classes, the security boundaries that should prevent unauthorized access are not properly enforced. This allows remote attackers to exploit the vulnerability through unspecified vectors that likely involve manipulating class loading requests or leveraging existing Java reflection mechanisms to bypass access restrictions. The flaw essentially creates a backdoor mechanism within the Java runtime that enables attackers to access classes that should be restricted to privileged system operations or internal runtime components. The vulnerability is particularly concerning because it affects multiple major versions of the IBM Java SDK, indicating a fundamental flaw in the access control implementation rather than a localized issue. Attackers could potentially use this vulnerability to access sensitive system classes that provide access to core JVM functionality, memory management operations, or system-level resources that should remain protected from external interference.
The operational impact of this vulnerability extends beyond simple information disclosure, as it creates opportunities for more severe attacks including remote code execution, privilege escalation, and complete system compromise. Applications running on affected IBM Java SDK versions become vulnerable to attacks where remote adversaries can manipulate the class loading process to gain access to restricted classes that may provide access to system resources, memory locations, or administrative functions. The vulnerability affects enterprise environments where IBM Java SDK is widely deployed for application servers, web applications, and backend services, making it a significant concern for organizations managing large Java-based infrastructures. Organizations using these vulnerable versions may experience unauthorized access to sensitive data, potential system instability, or complete compromise of applications running on affected platforms. The remote nature of the attack vector means that exploitation can occur without requiring local system access, making the vulnerability particularly dangerous for publicly accessible applications and services. Security teams should consider this vulnerability as a high-priority issue requiring immediate attention due to its potential for widespread impact across multiple IBM Java SDK versions.
Organizations affected by CVE-2013-4041 should immediately implement mitigations including applying the relevant IBM security patches and service releases that address the access control issues in the Java SDK implementations. The recommended approach involves upgrading to IBM Java SDK versions that include the security fixes for SR16 FP4, SR6, SR7, and SR15 respectively, depending on the specific version currently in use. System administrators should conduct thorough vulnerability assessments to identify all systems running affected IBM Java SDK versions and prioritize patching efforts based on risk assessment. Additional mitigations include implementing network segmentation to limit access to Java applications, monitoring for unusual class loading patterns, and reviewing application security configurations to ensure proper access control enforcement. Organizations should also consider implementing runtime protection mechanisms such as Java Security Managers with strict policy configurations and application firewalls to detect and prevent exploitation attempts. The vulnerability highlights the importance of maintaining up-to-date security patches for enterprise Java implementations and demonstrates the critical need for continuous monitoring of security advisories from software vendors. Regular security audits should be conducted to ensure that all Java-based applications are running on supported, patched versions of the runtime environment.