CVE-2006-0778 in Forums
Summary
by MITRE
Multiple SQL injection vulnerabilities in XMB Forums 1.9.3 and earlier allow remote attackers to execute arbitrary SQL commands via the (1) $u2u_select array parameter to u2u.inc.php and (2) $val variable (fidpw0 cookie value) in today.php.
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Analysis
by VulDB Data Team • 07/28/2022
The vulnerability identified as CVE-2006-0778 represents a critical security flaw in XMB Forums version 1.9.3 and earlier systems, demonstrating the persistent threat of SQL injection attacks in web applications. This vulnerability exists within the forum software's handling of user input parameters, specifically targeting two distinct entry points that allow unauthorized users to manipulate database queries. The flaw resides in the improper sanitization of input data before it is processed by the application's database interaction functions, creating a pathway for malicious actors to execute arbitrary SQL commands directly against the underlying database system.
The technical implementation of this vulnerability occurs through two primary vectors within the XMB Forums application. The first vulnerability manifests in the u2u.inc.php file where the $u2u_select array parameter is not properly validated or escaped before being incorporated into SQL queries. This allows attackers to inject malicious SQL code through array elements that should only contain legitimate user data. The second vulnerability appears in today.php where the $val variable, derived from the fidpw0 cookie value, is directly used in database operations without adequate input filtering. Both vectors demonstrate a fundamental failure in input validation and output encoding practices that are essential for preventing SQL injection attacks according to industry standards such as CWE-89.
The operational impact of this vulnerability extends beyond simple data theft, as it enables complete database compromise and potential system takeover. Attackers can leverage these vulnerabilities to extract sensitive information including user credentials, personal data, and forum configuration details. The remote execution capability means that adversaries do not require physical access to the server or local network connectivity to exploit these flaws, making them particularly dangerous in publicly accessible web applications. This vulnerability directly aligns with ATT&CK technique T1190, which describes the exploitation of vulnerabilities in web applications to gain unauthorized access to backend systems, and represents a classic example of how insufficient input validation can lead to complete system compromise.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term architectural improvements to prevent similar issues. The most direct solution involves implementing proper parameterized queries and input validation mechanisms throughout the application codebase, ensuring that all user-supplied data is properly escaped or parameterized before database interaction. System administrators should immediately upgrade to XMB Forums version 1.9.4 or later, which contains patches addressing these specific vulnerabilities. Additionally, implementing web application firewalls and input filtering mechanisms can provide additional layers of protection against similar attacks. Organizations should also conduct comprehensive code reviews to identify and remediate other potential SQL injection vulnerabilities throughout their application portfolio, as this type of flaw often indicates broader security weaknesses in application design and development practices.