CVE-2013-6468 in JBoss
Summary
by MITRE
JBoss Drools, Red Hat JBoss BRMS before 6.0.1, and Red Hat JBoss BPM Suite before 6.0.1 allows remote authenticated users to execute arbitrary Java code via a (1) MVFLEX Expression Language (MVEL) or (2) Drools expression.
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Analysis
by VulDB Data Team • 05/10/2026
The vulnerability identified as CVE-2013-6468 represents a critical remote code execution flaw affecting JBoss Drools, Red Hat JBoss BRMS, and Red Hat JBoss BPM Suite versions prior to 6.0.1. This vulnerability resides within the expression evaluation mechanisms of these business rules management systems, specifically exposing insecure deserialization and expression language processing capabilities that enable malicious actors to inject and execute arbitrary Java code on affected systems. The flaw stems from insufficient input validation and sanitization within the MVEL expression processing pipeline, creating an attack surface where authenticated users can leverage their credentials to escalate privileges and gain full control over the underlying application server.
The technical exploitation of this vulnerability occurs through two primary vectors: MVEL Expression Language (MVEL) injection and Drools expression manipulation. When authenticated users submit specially crafted expressions through the application interface, the system processes these inputs without adequate sanitization, allowing attackers to inject malicious code that gets executed within the JVM context. This vulnerability is classified as CWE-94, which represents "Improper Control of Generation of Code ('Code Injection')" and falls under the broader category of injection flaws that have been consistently ranked among the top security risks by OWASP. The attack requires authentication but does not require special privileges beyond what is normally granted to legitimate users, making it particularly dangerous in environments where user access controls may be insufficient.
The operational impact of this vulnerability extends far beyond simple code execution, as it provides attackers with complete control over the affected application servers and their underlying resources. Successful exploitation can lead to data breaches, system compromise, service disruption, and potential lateral movement within network environments where these systems reside. Attackers can leverage this vulnerability to establish persistent backdoors, exfiltrate sensitive business data, or use the compromised systems as launch points for further attacks against other networked systems. The vulnerability affects organizations using legacy versions of Red Hat JBoss products, potentially impacting critical business processes that rely on automated decision-making and business rule execution.
Organizations should immediately implement mitigation strategies including upgrading to patched versions of JBoss Drools, JBoss BRMS, and JBoss BPM Suite, specifically versions 6.0.1 or later where the vulnerability has been addressed. Additionally, implementing network segmentation, access controls, and monitoring for suspicious expression language usage can help detect and prevent exploitation attempts. The ATT&CK framework categorizes this vulnerability under T1059.007 "Command and Scripting Interpreter: Python" and T1078.004 "Valid Accounts: Cloud Accounts" when considering the lateral movement and privilege escalation aspects, though the core technique involves direct code injection through expression processing mechanisms. Security teams should also consider implementing application firewalls and input validation controls to prevent malformed expressions from reaching the vulnerable processing layers, while maintaining regular vulnerability assessments to identify similar weaknesses in other business rule engines and expression processing systems.