CVE-2006-6224 in Puntal
Summary
by MITRE
PHP remote file inclusion vulnerability in the installation scripts in Puntal before 1.8.5 allows remote attackers to execute arbitrary PHP code via the GLOBALS array.
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Analysis
by VulDB Data Team • 08/09/2018
The vulnerability described in CVE-2006-6224 represents a critical remote file inclusion flaw affecting Puntal versions prior to 1.8.5. This issue resides within the installation scripts of the application and demonstrates a classic path traversal and code execution vulnerability that has been prevalent in web applications for many years. The flaw specifically exploits how the application handles the GLOBALS array during the installation process, creating an avenue for remote attackers to inject and execute arbitrary PHP code on the target system.
This vulnerability directly maps to CWE-88, which describes the improper neutralization of special elements used in an OS command, and CWE-94, which addresses the execution of arbitrary code due to improper input validation. The technical implementation involves the installation scripts failing to properly sanitize or validate input parameters that are subsequently used to include files or execute code. When attackers manipulate the GLOBALS array, they can effectively bypass normal access controls and inject malicious PHP code that gets executed within the context of the web server process.
The operational impact of this vulnerability is severe as it allows attackers to gain full control over the affected web server and potentially compromise the entire application environment. Remote code execution capabilities mean that attackers can upload additional malicious payloads, establish backdoors, escalate privileges, and perform data exfiltration. The vulnerability affects the installation phase of the application, which means that even if the main application is secure, the installation scripts remain vulnerable and can be exploited before the application is properly configured.
Attackers leveraging this vulnerability typically follow the ATT&CK technique T1190 for exploitation through web applications and T1059 for command execution through PHP code injection. The attack surface is particularly dangerous because installation scripts are often accessible and may not be properly secured or monitored. Organizations using affected versions of Puntal face significant risk of compromise, especially in environments where the installation scripts remain accessible to unauthenticated users. The vulnerability demonstrates poor input validation practices and highlights the importance of proper sanitization of user-supplied data, particularly in administrative or installation contexts where elevated privileges are typically required.
The recommended mitigation strategy involves upgrading to Puntal version 1.8.5 or later, where the vulnerability has been addressed through proper input validation and sanitization of the GLOBALS array. Additionally, implementing proper access controls to restrict access to installation scripts, disabling unnecessary installation functionality in production environments, and conducting regular security audits of web applications can help prevent exploitation. Network segmentation and monitoring for suspicious file inclusion patterns can also provide early detection of attempted exploitation. Organizations should also consider implementing web application firewalls and input validation mechanisms to prevent similar vulnerabilities from occurring in other applications.