CVE-2006-5183 in Dayfox Blog
Summary
by MITRE
Multiple PHP remote file inclusion vulnerabilities in Dayfox Designs Dayfox Blog 2.0 allow remote attackers to execute arbitrary PHP code via a URL in the slogin parameter in the (1) adminlog.php, (2) postblog.php, (3) index.php, or (4) index2.php script in /edit.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 04/23/2026
The vulnerability described in CVE-2006-5183 represents a critical remote file inclusion flaw affecting Dayfox Designs Dayfox Blog 2.0 software. This vulnerability falls under the category of insecure direct object references and allows malicious actors to inject arbitrary PHP code through carefully crafted URLs. The flaw specifically manifests in four distinct script files within the /edit directory of the vulnerable application. The affected files include adminlog.php, postblog.php, index.php, and index2.php, all of which accept user input through the slogin parameter. This parameter serves as the entry point for attackers to manipulate the application's behavior and potentially gain unauthorized access to the system.
The technical exploitation of this vulnerability occurs when the application fails to properly validate or sanitize user-supplied input before incorporating it into file inclusion operations. When an attacker provides a malicious URL as the slogin parameter value, the vulnerable application treats this input as a legitimate file path and attempts to include and execute the remote file. This represents a classic remote file inclusion vulnerability that enables attackers to execute arbitrary code on the target server with the privileges of the web application. The vulnerability is particularly dangerous because it can be exploited across multiple endpoints within the same application, amplifying the potential attack surface. The flaw is categorized as CWE-88, which specifically addresses improper neutralization of special elements used in an expression, and aligns with the broader category of CWE-94, which covers improper control of generation of code.
The operational impact of this vulnerability extends beyond simple code execution, as it can provide attackers with complete control over the affected web server. An attacker could potentially upload malicious files, access sensitive data, modify content, or even establish persistent backdoors within the compromised system. The vulnerability's presence in multiple files within the same directory structure indicates a systemic design flaw in the application's input handling mechanisms, suggesting that similar issues may exist elsewhere in the codebase. This type of vulnerability is particularly concerning in web applications where user input is directly used in file operations without proper sanitization or validation. From an attack perspective, this vulnerability maps directly to the ATT&CK technique T1190, which involves using remote services to gain access to systems, and T1059, which covers executing malicious code through various payloads.
Mitigation strategies for this vulnerability require immediate implementation of input validation and sanitization measures throughout the affected application. The most effective approach involves disabling remote file inclusion functionality entirely by configuring the PHP environment to restrict include operations to local files only. Additionally, developers should implement strict input validation that rejects any URLs or external references in parameters that are used for file inclusion operations. The application should enforce proper parameter sanitization by filtering out special characters and ensuring that all inputs are properly validated against a whitelist of acceptable values. Security measures should also include disabling the register_globals directive in PHP configurations and implementing proper access controls for administrative functions. Organizations should also consider implementing web application firewalls that can detect and block suspicious patterns associated with file inclusion attacks, and conduct thorough code reviews to identify similar vulnerabilities in other parts of the application. Regular security assessments and vulnerability scanning should be performed to ensure that no other similar flaws exist within the system's codebase.