CVE-2006-6592 in Bloq
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in Bloq 0.5.4 allow remote attackers to execute arbitrary PHP code via a URL in the page[path] parameter to (1) index.php, (2) admin.php, (3) rss.php, (4) rdf.php, (5) rss2.php, or (6) files/mainfile.php.
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Analysis
by VulDB Data Team • 08/03/2025
The vulnerability identified as CVE-2006-6592 represents a critical remote file inclusion flaw affecting Bloq version 0.5.4, a content management system that was prevalent during the mid-2000s era of web development. This vulnerability resides within the application's handling of user-supplied input parameters, specifically the page[path] parameter that is processed across multiple entry points within the software's architecture. The flaw enables malicious actors to inject arbitrary URLs into the application's execution flow, effectively bypassing normal security boundaries and allowing for unauthorized code execution on the target server. This type of vulnerability falls under the category of CWE-88, which describes improper neutralization of special elements used in an OS command, and more specifically aligns with CWE-94, which addresses the execution of arbitrary code due to improper input validation. The attack vector operates through the exploitation of PHP's include or require functions, which accept dynamic parameters without proper sanitization, creating an environment where attacker-controlled URLs can be seamlessly integrated into the application's runtime execution context.
The technical implementation of this vulnerability demonstrates a fundamental flaw in input validation and parameter handling within the Bloq application's core processing logic. When users or attackers provide a URL through the page[path] parameter, the application fails to validate or sanitize this input before using it in file inclusion operations. This oversight allows the PHP interpreter to treat the provided URL as a legitimate file path, potentially downloading and executing remote code from attacker-controlled servers. The vulnerability affects multiple files within the application's codebase including index.php, admin.php, rss.php, rdf.php, rss2.php, and files/mainfile.php, indicating a systemic issue in how the application handles parameterized file operations. The impact extends beyond simple code execution to encompass potential server compromise, data theft, and unauthorized access to the underlying system resources. From an operational perspective, this vulnerability creates a persistent risk for any organization running the affected Bloq version, as it requires no user interaction to exploit and can be automated through various attack frameworks.
The operational impact of CVE-2006-6592 significantly increases the attack surface for affected systems, potentially allowing threat actors to establish persistent backdoors, exfiltrate sensitive data, or use compromised servers for further attacks within the network infrastructure. This vulnerability directly maps to several ATT&CK techniques including T1190 for exploitation of remote services, T1059 for execution through PHP scripts, and T1078 for legitimate credentials use. The attack can be executed through various methods including direct URL manipulation, web application penetration testing tools, or automated exploit frameworks that target known vulnerabilities in content management systems. Organizations running Bloq 0.5.4 are particularly vulnerable because the flaw affects core administrative and content delivery functions, potentially allowing attackers to gain full administrative control over the application and underlying server. The exploitation process typically involves crafting malicious URLs that point to attacker-controlled servers hosting malicious PHP payloads, which are then included and executed within the vulnerable application context.
Mitigation strategies for CVE-2006-6592 must address both immediate remediation and long-term architectural improvements to prevent similar vulnerabilities in future deployments. The most effective immediate solution involves patching the application to version 0.5.5 or later, which contains the necessary input validation fixes and secure file inclusion mechanisms. Organizations should implement proper parameter validation and sanitization techniques, ensuring that all user-supplied input is rigorously checked before being used in file inclusion operations. This includes implementing allowlists of acceptable file paths, rejecting URLs that contain suspicious patterns, and employing proper input encoding techniques. Network-level protections such as web application firewalls can provide additional defense-in-depth measures by monitoring and blocking suspicious URL patterns. From a security architecture perspective, organizations should adopt the principle of least privilege for web application deployments, ensuring that application processes run with minimal necessary permissions and that file inclusion operations are restricted to predefined safe directories. The vulnerability also highlights the importance of regular security assessments and vulnerability scanning to identify similar issues in legacy applications that may not receive ongoing support or security updates. Additionally, implementing proper logging and monitoring of file inclusion operations can help detect potential exploitation attempts and provide forensic evidence for incident response activities.