CVE-2009-0488 in Phorum
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Phorum before 5.2.10 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 10/27/2018
The vulnerability identified as CVE-2009-0488 represents a critical cross-site scripting flaw in Phorum versions prior to 5.2.10, classified under CWE-79 as improper neutralization of input during web page generation. This weakness enables malicious actors to execute arbitrary web scripts or HTML code within the context of other users' browsers, fundamentally compromising the security of web applications that rely on Phorum for forum functionality. The vulnerability's classification as a client-side attack vector means that the malicious code executes in the victim's browser rather than on the server, making it particularly dangerous for user data and session integrity.
The technical nature of this XSS vulnerability stems from inadequate input validation and output sanitization within the Phorum application's handling of user-submitted content. Attackers can exploit unspecified vectors to inject malicious scripts that persist in the application's database or temporary storage, subsequently executing when other users view affected pages. This type of vulnerability typically occurs when user input is directly rendered in web pages without proper encoding or filtering mechanisms, allowing attackers to manipulate the application's behavior through crafted payloads. The unspecified nature of the attack vectors in this particular vulnerability suggests multiple potential entry points within the application's codebase where input validation fails.
The operational impact of this vulnerability extends beyond simple script execution, as it can lead to session hijacking, credential theft, defacement of forum content, and potential redirection to malicious sites. When users browse forum pages containing the injected scripts, their browsers execute the malicious code, potentially stealing cookies, session tokens, or other sensitive information. This compromises not only individual user accounts but also the overall integrity of the forum's data and user trust. The vulnerability affects the core functionality of web applications by enabling unauthorized code execution in legitimate user contexts, making it particularly dangerous for community-driven platforms where user-generated content is prevalent.
Organizations utilizing Phorum versions before 5.2.10 should immediately implement mitigations including upgrading to the patched version 5.2.10 or later, implementing proper input sanitization and output encoding mechanisms, and deploying web application firewalls to detect and prevent XSS attacks. The remediation strategy should include comprehensive code reviews focusing on input validation, implementation of Content Security Policy headers, and regular security testing to identify similar vulnerabilities. From an ATT&CK framework perspective, this vulnerability maps to technique T1059.001 for command and script injection, with potential lateral movement opportunities through session hijacking and credential theft. Additionally, organizations should consider implementing automated vulnerability scanning and penetration testing procedures to identify and remediate similar weaknesses in other web applications within their infrastructure.