CVE-2006-6586 in vBlog
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in Vortex Blog (vBlog, aka C12) a0.1_nonfunc allow remote attackers to execute arbitrary PHP code via a URL in the cfgProgDir parameter in (1) secure.php or (2) checklogin.php in admin/auth/.
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Analysis
by VulDB Data Team • 08/06/2024
The vulnerability CVE-2006-6586 represents a critical remote file inclusion flaw affecting Vortex Blog (vBlog) version a0.1_nonfunc, also known as C12. This vulnerability resides within the administrative authentication components of the blogging platform, specifically in two key files: secure.php and checklogin.php located within the admin/auth/ directory structure. The flaw enables malicious actors to inject arbitrary PHP code by manipulating the cfgProgDir parameter through URL-based inputs, creating a severe security risk for affected systems.
The technical mechanism behind this vulnerability stems from improper input validation and dynamic file inclusion practices within the application's authentication logic. When the application processes user-supplied input through the cfgProgDir parameter without adequate sanitization or validation, it becomes susceptible to malicious payload injection. This weakness directly maps to CWE-98, which describes improper file inclusion vulnerabilities where applications include files based on user-supplied input without proper validation. The vulnerability allows attackers to specify arbitrary URLs that get included and executed within the application context, effectively bypassing normal security boundaries.
The operational impact of this vulnerability is profound and far-reaching for affected organizations. Remote attackers can execute arbitrary code on vulnerable systems with the privileges of the web server process, potentially leading to complete system compromise. This includes unauthorized data access, data manipulation, privilege escalation, and establishment of persistent backdoors. The vulnerability affects the administrative authentication components, meaning attackers could gain unauthorized access to the blog management interface and potentially compromise the entire blogging platform. According to ATT&CK framework, this vulnerability maps to T1059.007 for command and scripting interpreter and T1505.003 for server-side injection, representing the exploitation techniques used to achieve remote code execution.
Organizations utilizing vulnerable versions of Vortex Blog must implement immediate mitigation strategies to protect their systems. The primary remediation involves updating to the latest available version of the software that addresses this vulnerability through proper input validation and sanitization. Additionally, administrators should implement web application firewalls with rules specifically targeting suspicious file inclusion patterns and URL parameters. Input validation should be strengthened to reject any non-numeric or non-alphanumeric characters in the cfgProgDir parameter, while also implementing proper access controls and least privilege principles for web application directories. Regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other applications within the organization's infrastructure. The vulnerability demonstrates the critical importance of proper input validation and secure coding practices in preventing remote code execution attacks that can lead to complete system compromise.