CVE-2006-2969 in tinyMuw
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in L0j1k tinyMuw 0.1.0 allow remote attackers to inject arbitrary web script or HTML via a javascript URI in the SRC attribute of an IMG element in the input box in quickchat.php, and possibly other manipulations.
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Analysis
by VulDB Data Team • 07/28/2018
The vulnerability identified as CVE-2006-2969 represents a classic cross-site scripting flaw within the L0j1k tinyMuw 0.1.0 web application framework. This security weakness specifically manifests in the quickchat.php component where user input is not properly sanitized or validated before being rendered back to other users. The vulnerability stems from inadequate input filtering mechanisms that fail to properly escape or validate data submitted through web forms, creating an environment where malicious actors can inject harmful script code into the application's output streams. The flaw is particularly concerning because it allows attackers to exploit the SRC attribute of IMG elements, which are commonly used in web interfaces and often trusted by browsers during rendering processes. This particular implementation vulnerability enables attackers to craft malicious input that includes javascript URIs, which can then be executed in the context of other users' browsers when the compromised content is displayed.
The technical exploitation of this vulnerability follows a well-established XSS attack pattern that aligns with CWE-79, which categorizes cross-site scripting as a weakness where untrusted data is sent to a web browser without proper validation or sanitization. Attackers can leverage this flaw by submitting malicious content containing javascript code within the SRC attribute of an IMG tag, effectively bypassing standard input validation controls. The vulnerability demonstrates a failure in output encoding and context awareness, as the application does not properly distinguish between legitimate content and potentially malicious script code. This particular variant of XSS is classified as reflected XSS since the malicious payload is processed by the server and then immediately reflected back to users without proper sanitization. The attack vector specifically targets the quickchat.php interface, suggesting that the vulnerability exists in the application's user input handling and output rendering mechanisms within this specific component.
The operational impact of CVE-2006-2969 extends beyond simple data theft or defacement, as it provides attackers with the capability to execute arbitrary code in victims' browsers with the privileges of those users. This vulnerability can be exploited to steal session cookies, redirect users to malicious websites, perform unauthorized actions on behalf of users, or even establish persistent backdoors through more sophisticated attack chains. The implications are particularly severe in environments where the chat application is used for sensitive communications or where users may have elevated privileges within the system. From an ATT&CK framework perspective, this vulnerability maps to techniques involving code injection and credential access, potentially enabling adversaries to move laterally within networks or establish persistent access. The vulnerability's exploitation requires minimal technical skill, making it attractive to a broad range of threat actors from script kiddies to sophisticated attackers, and the potential for automated exploitation through web crawlers or scanning tools further amplifies its threat profile.
Mitigation strategies for CVE-2006-2969 must address both immediate remediation and long-term architectural improvements to prevent similar vulnerabilities. The primary solution involves implementing proper input validation and output encoding mechanisms that sanitize all user-supplied data before rendering it in web pages. This includes escaping special characters, validating input against strict whitelists, and ensuring that all dynamic content is properly encoded for the specific output context. Organizations should implement Content Security Policy headers to limit the sources from which scripts can be loaded, and consider using frameworks or libraries that automatically handle XSS protection. Regular security testing including automated scanning and manual penetration testing should be conducted to identify similar vulnerabilities in other parts of the application. The vulnerability also highlights the importance of keeping web applications updated with the latest security patches and following secure coding practices such as those outlined in OWASP's Secure Coding Guidelines. Additionally, implementing proper access controls and monitoring for unusual activity patterns can help detect exploitation attempts and minimize the potential damage from successful attacks.