CVE-2006-2070 in DevBB
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in member.php in DevBB 1.0.0 and earlier allows remote attackers to inject arbitrary web script or HTML via the member parameter in a viewpro action.
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Analysis
by VulDB Data Team • 09/26/2025
The vulnerability identified as CVE-2006-2070 represents a classic cross-site scripting flaw within the DevBB 1.0.0 bulletin board system, classified under CWE-79 - Improper Neutralization of Input During Web Page Generation. This vulnerability exists in the member.php script where the application fails to properly sanitize user input before incorporating it into dynamically generated web pages. The specific attack vector occurs when a malicious actor manipulates the member parameter within the viewpro action, allowing arbitrary HTML or JavaScript code to be injected into the vulnerable application's output.
The technical implementation of this flaw stems from the application's insufficient input validation and output encoding mechanisms. When a user requests to view a member profile through the viewpro action, the member parameter is directly processed and displayed without adequate sanitization. This creates an environment where attackers can embed malicious scripts that execute in the context of other users' browsers. The vulnerability is particularly concerning because it operates at the presentation layer of the web application, where user-supplied data is rendered as part of the web page content, making it a prime target for exploitation.
From an operational impact perspective, this XSS vulnerability enables attackers to perform several malicious activities including session hijacking, credential theft, and defacement of the bulletin board system. An attacker could craft a malicious profile URL containing JavaScript code that steals cookies or session tokens from unsuspecting users who visit the compromised profile page. The vulnerability also allows for more sophisticated attacks such as redirecting users to malicious sites or injecting malware delivery mechanisms. The exploitation requires minimal technical skill and can be automated, making it particularly dangerous for public bulletin board systems where user-generated content is prevalent.
The attack surface is further extended through the use of the ATT&CK framework's T1566.001 technique for Initial Access through Web Application Attack Surface, where the vulnerability serves as an entry point for more extensive attacks. The lack of proper input validation and output encoding represents a failure in the application's defense-in-depth strategy, as this vulnerability could potentially be leveraged as a stepping stone for privilege escalation or lateral movement within the application's ecosystem. Security professionals should note that this vulnerability falls under the broader category of web application security flaws that are commonly exploited in automated attack campaigns targeting content management systems and bulletin board platforms.
Mitigation strategies should focus on implementing proper input validation and output encoding mechanisms to prevent the injection of malicious content. The application should sanitize all user-supplied input before processing and ensure that any data displayed in web pages is properly escaped to prevent script execution. Additionally, implementing a Content Security Policy (CSP) header can provide an additional layer of protection against XSS attacks. Regular security audits and code reviews should be conducted to identify similar input validation gaps, and the system should be updated to a patched version of DevBB that addresses this vulnerability. Organizations should also consider implementing web application firewalls and monitoring for suspicious parameter values to detect potential exploitation attempts.