CVE-2004-2331 in ColdFusion
Summary
by MITRE
ColdFusion MX 6.1 and 6.1 J2EE allows local users to bypass sandbox security restrictions and obtain sensitive information by using Java reflection methods to access trusted Java objects without using the CreateObject function or cfobject tag.
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Analysis
by VulDB Data Team • 07/05/2025
The vulnerability described in CVE-2004-2331 represents a critical sandbox escape in Adobe ColdFusion MX 6.1 and its J2EE edition, fundamentally undermining the security model designed to isolate untrusted code execution. This flaw allows local attackers to circumvent the intended security boundaries that protect the ColdFusion runtime environment from unauthorized access to system resources and sensitive information. The vulnerability specifically targets the Java sandbox implementation within ColdFusion's object creation and access mechanisms, creating a pathway for privilege escalation and information disclosure that could compromise the entire application server environment.
The technical exploitation of this vulnerability leverages Java reflection capabilities to directly access trusted Java objects that should normally be restricted to authorized code paths. Through careful manipulation of Java reflection APIs, attackers can bypass the standard ColdFusion object creation methods including the CreateObject function and cfobject tag, which are designed to enforce security policies and sandbox restrictions. This approach enables unauthorized access to core Java classes and system resources that typically remain hidden from regular ColdFusion scripting contexts. The flaw essentially allows attackers to obtain references to Java objects that are normally protected by the sandbox, enabling them to access sensitive information, execute arbitrary code, and potentially gain deeper system access than intended by the security architecture.
The operational impact of this vulnerability extends beyond simple information disclosure to encompass potential system compromise and unauthorized access to critical application resources. Local users with access to the ColdFusion environment can exploit this flaw to access system files, database connections, and other sensitive resources that should remain isolated from regular application execution contexts. The vulnerability undermines the fundamental security model of ColdFusion's object sandboxing, potentially allowing attackers to escalate privileges, access confidential data, and perform actions that should be restricted to administrators or trusted system components. This type of sandbox escape is particularly dangerous in web application environments where ColdFusion serves as a backend processing engine for enterprise applications.
From a cybersecurity perspective, this vulnerability aligns with CWE-284 (Improper Access Control) and represents a classic example of privilege escalation through bypass of access controls. The flaw demonstrates how inadequate sandbox implementation can create attack vectors that allow local users to circumvent security boundaries, making it a target for both internal and external threat actors who may have local access to the system. Security practitioners should note the ATT&CK framework's relevance to this vulnerability, particularly the techniques related to privilege escalation and defense evasion. The vulnerability also highlights the importance of proper input validation and access control implementation in application servers, as the flaw stems from insufficient restrictions on Java reflection usage within the ColdFusion runtime environment.
Mitigation strategies for this vulnerability should focus on immediate patching of affected ColdFusion versions, implementation of strict access controls, and enhanced monitoring of Java reflection usage within the application server. Organizations should consider implementing additional security layers such as application firewalls, runtime application protection, and comprehensive logging of suspicious Java reflection activities. The recommended approach includes disabling unnecessary Java reflection capabilities, implementing proper access controls for system resources, and conducting regular security assessments to identify similar sandbox escape vulnerabilities. Additionally, administrators should review and restrict local user access to ColdFusion environments, as the vulnerability specifically targets local users who can leverage their access to exploit the sandbox restrictions.