CVE-2006-5412 in Easynews
Summary
by MITRE
admin.php in PHP Outburst Easynews 4.4.1 and earlier, when register_globals is enabled, allows remote attackers to bypass authentication, and gain the ability to execute arbitrary code, via the en_login_id parameter.
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Analysis
by VulDB Data Team • 04/25/2026
The vulnerability identified as CVE-2006-5412 affects PHP Outburst Easynews version 4.4.1 and earlier, presenting a critical security flaw that stems from improper input validation and insecure configuration practices. This issue specifically targets the admin.php script which handles administrative authentication processes, creating a pathway for remote attackers to bypass authentication mechanisms and execute arbitrary code on the affected system. The vulnerability's exploitation is directly tied to the presence of the register_globals PHP configuration setting, which when enabled creates dangerous variable injection conditions that attackers can leverage for unauthorized access.
The technical flaw manifests through the improper handling of the en_login_id parameter within the admin.php script. When register_globals is enabled, PHP automatically creates global variables from request parameters, effectively merging them into the global namespace. This creates a scenario where attacker-controlled input can directly influence the script's execution flow, allowing malicious actors to manipulate authentication checks by injecting crafted values into the en_login_id parameter. The vulnerability represents a classic case of insecure input handling that enables privilege escalation and arbitrary code execution through parameter manipulation.
The operational impact of this vulnerability is severe and far-reaching, as it provides attackers with complete administrative control over the affected PHP Outburst Easynews installation. Once authenticated, malicious actors can perform any administrative function including but not limited to modifying content, adding or removing users, accessing sensitive data, and potentially using the compromised system as a launch point for further attacks within the network infrastructure. The ability to execute arbitrary code means attackers can install backdoors, modify system files, or establish persistent access to the compromised environment, making this vulnerability particularly dangerous for organizations relying on the affected software.
This vulnerability aligns with CWE-255 Improper Handling of Credentials and CWE-79 Improper Neutralization of Input During Web Page Generation, reflecting the intersection of authentication bypass and input validation failures. From an ATT&CK framework perspective, this vulnerability maps to T1078 Valid Accounts and T1059 Command and Scripting Interpreter, as it enables attackers to leverage valid administrative credentials and execute malicious commands through the compromised interface. The vulnerability also demonstrates characteristics of T1566 Phishing and T1190 Exploitation of Remote Services, as it can be exploited through web-based attack vectors that target the application's administrative interface.
The recommended mitigation strategies include immediately disabling the register_globals setting in PHP configuration, which eliminates the primary attack vector for this vulnerability. Organizations should also implement proper input validation and sanitization measures within the affected application, ensuring that all user-supplied parameters are thoroughly checked before being processed. Additionally, administrators should upgrade to a patched version of PHP Outburst Easynews if available, or consider migrating to more secure and actively maintained content management systems. Network segmentation and access controls should be implemented to limit exposure of administrative interfaces, while regular security audits and monitoring should be conducted to detect potential exploitation attempts. The most critical immediate action is to disable register_globals and ensure that all administrative interfaces are properly secured through authentication mechanisms that do not rely on potentially dangerous PHP configuration settings.