CVE-2003-0590 in Splatt
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Splatt Forum allows remote attackers to insert arbitrary HTML and web script via the post icon (image_subject) field.
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Analysis
by VulDB Data Team • 01/14/2025
The CVE-2003-0590 vulnerability represents a classic cross-site scripting flaw within the Splatt Forum software ecosystem, demonstrating how web applications can fail to properly sanitize user input before rendering it in web pages. This particular weakness exists in the post icon or image_subject field processing mechanism, where the application fails to adequately validate or escape user-provided content before incorporating it into the HTML output. The vulnerability stems from the application's insecure handling of dynamic content injection, allowing malicious actors to craft specially formatted input that gets executed as client-side script when other users view the affected forum posts.
The technical implementation of this vulnerability aligns with CWE-79, which specifically addresses cross-site scripting vulnerabilities in web applications. Attackers can exploit this flaw by submitting malicious HTML code or JavaScript within the image_subject field during post creation. When other users browse the forum and encounter these posts, their browsers execute the injected scripts in the context of the vulnerable forum's domain, potentially leading to session hijacking, credential theft, or redirection to malicious sites. The vulnerability operates through the standard XSS attack vector where unfiltered user input becomes part of the web page's dynamic content without proper sanitization or encoding.
From an operational perspective, this vulnerability poses significant risks to forum administrators and end users alike. The attack surface extends beyond simple data theft to encompass potential account compromise and service disruption. An attacker could use this vulnerability to inject scripts that steal cookies, redirect users to phishing sites, or even modify forum content to spread malware. The impact is particularly concerning in community forums where users trust the platform's content and may not be aware of the malicious code injection occurring within seemingly legitimate posts. The vulnerability's exploitation requires minimal technical skill, making it attractive to threat actors seeking broad impact with relatively simple attacks.
Security mitigations for CVE-2003-0590 should focus on implementing comprehensive input validation and output encoding strategies. The primary defense mechanism involves sanitizing all user input through proper HTML escaping before rendering it in web pages, ensuring that any special characters are converted to their HTML entity equivalents. Additionally, implementing a content security policy that restricts script execution and using proper input validation libraries can prevent malicious code injection. Organizations should also consider implementing web application firewalls to detect and block suspicious input patterns, while regular security audits and code reviews should be conducted to identify similar vulnerabilities in other application components. The remediation aligns with ATT&CK technique T1566, which covers the exploitation of web application vulnerabilities for initial access and privilege escalation, making proper input validation a critical defensive measure.