CVE-2006-4960 in Php Blue Dragon
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php Php Blue Dragon 2.9.1 and earlier allows remote attackers to inject arbitrary web script or HTML via the m parameter, which is reflected in an error message resulting from a failed SQL query.
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Analysis
by VulDB Data Team • 12/20/2024
The vulnerability described in CVE-2006-4960 represents a classic cross-site scripting flaw affecting Php Blue Dragon version 2.9.1 and earlier. This security weakness resides in the index.php script where user-supplied input is inadequately sanitized before being processed and displayed in error messages. The vulnerability specifically manifests when the m parameter is manipulated by an attacker, causing the application to reflect this input in error messages generated from failed SQL query operations. This particular implementation creates a pathway for malicious actors to execute arbitrary web scripts or HTML code within the context of a victim's browser session, fundamentally compromising the application's security posture and user data integrity.
The technical exploitation of this vulnerability follows a well-established pattern that aligns with CWE-79, which categorizes cross-site scripting as a critical weakness in web applications. When an attacker submits malicious input through the m parameter, the application fails to properly escape or validate this data before incorporating it into error messages. The reflected nature of this vulnerability means that the malicious payload is directly injected into the response without being stored, making it a reflected XSS attack. This particular variant operates through the SQL error handling mechanism, where failed database operations trigger error messages that include the unsanitized user input, creating the perfect conditions for script execution. The vulnerability demonstrates poor input validation and output encoding practices that violate fundamental web security principles and are commonly addressed through the implementation of proper sanitization routines.
The operational impact of this vulnerability extends beyond simple script injection, as it provides attackers with the capability to perform session hijacking, deface web pages, steal user credentials, or redirect victims to malicious websites. An attacker could craft payloads that exploit the reflected XSS to steal session cookies, potentially gaining unauthorized access to user accounts within the application. The vulnerability affects the entire user base of Php Blue Dragon installations, making it a significant risk for organizations relying on this platform. The reflected nature of the attack means that victims must be tricked into clicking malicious links, typically through social engineering tactics or phishing campaigns. This attack vector aligns with several techniques documented in the MITRE ATT&CK framework under the T1059.001 category, specifically focusing on the execution of malicious code through web-based interfaces.
Mitigation strategies for CVE-2006-4960 must address the core issue of inadequate input sanitization and output encoding. The primary solution involves implementing proper input validation and output encoding mechanisms that escape special characters before incorporating user data into application responses. Organizations should immediately upgrade to Php Blue Dragon versions that address this vulnerability, as version 2.9.2 and later include necessary security patches. Additionally, developers should implement Content Security Policy headers to limit the execution of inline scripts and employ proper parameter validation techniques. The implementation of prepared statements and parameterized queries can prevent SQL injection attacks that often lead to XSS vulnerabilities, while also providing better overall database security. Security teams should also consider implementing web application firewalls and regular security assessments to identify similar vulnerabilities in other components of their web infrastructure, ensuring comprehensive protection against reflected XSS attacks and similar cross-site scripting threats that continue to pose significant risks to web applications.