CVE-2006-3795 in DeluxeBB
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in DeluxeBB before 1.08 allow remote attackers to inject arbitrary web script or HTML via the (1) membercookie cookie in header.php and the (2) redirect parameter in misc.php.
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Analysis
by VulDB Data Team • 07/31/2018
The vulnerability identified as CVE-2006-3795 represents a critical cross-site scripting flaw affecting DeluxeBB versions prior to 1.08. This vulnerability exists within the web application's handling of user input and cookie management, creating opportunities for remote attackers to execute malicious scripts within the context of other users' browsers. The affected software demonstrates poor input validation and output encoding practices that directly enable malicious code injection attacks.
The technical implementation of this vulnerability occurs through two distinct attack vectors within the DeluxeBB application. The first vector involves the membercookie cookie parameter within the header.php file, where user-supplied cookie data is not properly sanitized before being processed or displayed. The second vector targets the redirect parameter in misc.php, where unvalidated user input is used to construct redirection URLs without adequate security controls. Both pathways demonstrate inadequate input validation mechanisms and insufficient output encoding that allows attackers to inject malicious HTML and JavaScript code directly into the application's response.
From an operational perspective, this vulnerability enables attackers to perform various malicious activities including session hijacking, credential theft, and data exfiltration. An attacker could craft malicious cookies or manipulate the redirect parameter to redirect users to phishing sites, steal session tokens, or inject persistent malicious scripts that would execute whenever affected users access the forum. The impact extends beyond individual user compromise to potentially affect the entire forum community, as the injected scripts could modify forum content, steal user credentials, or establish command and control channels.
The vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws in web applications, and demonstrates characteristics consistent with the ATT&CK technique T1566.001 for phishing with email. Organizations deploying DeluxeBB systems should implement immediate mitigations including input validation for all cookie parameters and redirect URLs, output encoding for all user-supplied data, and proper cookie security attributes. The recommended remediation involves upgrading to DeluxeBB version 1.08 or later, which contains the necessary patches to address these vulnerabilities. Additionally, implementing a web application firewall with XSS detection capabilities and conducting regular security assessments can provide additional protection layers against similar vulnerabilities in the application's attack surface.