CVE-2012-0394 in Struts
Summary
by MITRE
** DISPUTED ** The DebuggingInterceptor component in Apache Struts before 2.3.1.1, when developer mode is used, allows remote attackers to execute arbitrary commands via unspecified vectors. NOTE: the vendor characterizes this behavior as not "a security vulnerability itself."
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Analysis
by VulDB Data Team • 09/30/2024
The vulnerability identified as CVE-2012-0394 affects the DebuggingInterceptor component within Apache Struts frameworks prior to version 2.3.1.1. This issue specifically manifests when the framework operates in developer mode, creating a potential attack surface that could be exploited by remote adversaries. The vulnerability stems from the DebuggingInterceptor's handling of certain input parameters that are processed during the framework's debugging operations, though the exact vector remains unspecified in the initial description.
The technical flaw resides in the improper validation and sanitization of input parameters within the DebuggingInterceptor module. When Apache Struts operates in developer mode, this interceptor processes debugging information that includes user-supplied parameters. The vulnerability allows attackers to inject malicious commands through these parameters, potentially leading to arbitrary code execution on the affected server. This represents a critical security weakness as the debugging functionality is typically intended for development environments but can be exploited in production systems where developer mode remains enabled.
From an operational perspective, the impact of this vulnerability extends beyond simple command execution, as it provides attackers with the ability to compromise entire server environments. The security implications are particularly severe when considering that developer mode is often enabled during development but may inadvertently remain active in production systems. This vulnerability aligns with CWE-77 and CWE-94 categories, representing command injection and code execution flaws respectively, which are fundamental threats to application security. The ATT&CK framework would categorize this under T1059.001 for command and script injection techniques.
The vendor's characterization of this behavior as not constituting a security vulnerability itself reflects a debate within the security community about the scope of responsibility for debugging features. However, the practical reality remains that when developer mode is enabled in production environments, these debugging interceptors become attack vectors that can be exploited to gain unauthorized access to systems. The vulnerability demonstrates the importance of proper environment configuration and the dangers of leaving development-specific features enabled in production systems.
Effective mitigation strategies include immediate upgrading to Apache Struts version 2.3.1.1 or later, which contains fixes for this vulnerability. Organizations should also implement strict configuration management policies to ensure that developer mode is disabled in production environments. Additional protective measures include network segmentation, firewall rules to restrict access to debugging endpoints, and comprehensive monitoring of system activities for signs of exploitation attempts. Regular security assessments and penetration testing should be conducted to identify any remaining vulnerabilities in application frameworks and ensure that debugging features are properly secured.