CVE-2005-0832 in Web Forum
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in PHP-Post before 0.33 allows remote attackers to inject arbitrary web script or HTML via unknown vectors.
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Analysis
by VulDB Data Team • 07/23/2017
The vulnerability identified as CVE-2005-0832 represents a critical cross-site scripting flaw within the PHP-Post application version 0.32 and earlier. This vulnerability falls under the CWE-79 category of Improper Neutralization of Input During Web Page Generation, which is a fundamental weakness in web application security that allows malicious actors to inject client-side scripts into web pages viewed by other users. The PHP-Post application was designed to facilitate posting content to web forums and bulletin boards, making it a common target for attackers seeking to exploit web application vulnerabilities. The vulnerability exists in the input validation and output encoding mechanisms of the application, specifically in how it processes user-supplied data before rendering it within web pages. Attackers can leverage this weakness to execute arbitrary scripts in the context of the victim's browser, potentially leading to session hijacking, data theft, or defacement of web content. The unspecified vector nature of this vulnerability suggests that the attack could occur through multiple entry points within the application's input handling processes, including form submissions, URL parameters, or any other user-controllable input field. This makes the vulnerability particularly dangerous as it may be exploitable through various attack surfaces without requiring specific knowledge of the exact input point.
The operational impact of this vulnerability extends beyond simple script injection, as it enables attackers to manipulate the web application's behavior and compromise user sessions. When an attacker successfully exploits this vulnerability, they can inject malicious scripts that execute in the victim's browser, potentially stealing session cookies, redirecting users to malicious sites, or modifying the content displayed to users. The implications are severe for any web forum or bulletin board system that relies on PHP-Post, as these platforms typically handle sensitive user information and facilitate communication between multiple parties. The vulnerability's presence in versions prior to 0.33 indicates that it was likely a long-standing issue that had not been properly addressed in the application's security architecture. Organizations using affected versions face significant risk of data breaches, reputation damage, and potential compliance violations, especially if the platform handles personal or sensitive information. The nature of XSS vulnerabilities means that the attack can be executed through various methods including phishing emails, compromised web pages, or social engineering tactics that encourage users to click on malicious links or interact with compromised content.
Mitigation strategies for this vulnerability require immediate action to upgrade to PHP-Post version 0.33 or later, which presumably contains the necessary patches to address the input validation issues. Organizations should implement comprehensive input sanitization and output encoding mechanisms to prevent the injection of malicious scripts into web pages. The application should employ strict validation of all user-supplied data, including form fields, URL parameters, and any other input sources, ensuring that potentially dangerous characters are properly escaped or filtered. Additionally, implementing proper content security policies and using secure coding practices can significantly reduce the risk of exploitation. The vulnerability aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments and T1588.001 for development of tools, as attackers could create malicious payloads designed to exploit this vulnerability. Security teams should also consider implementing web application firewalls to detect and block suspicious input patterns, and conduct regular security assessments to identify similar vulnerabilities in other web applications within their infrastructure. The remediation process should include thorough testing to ensure that the patch does not introduce regressions in application functionality while effectively addressing the XSS vulnerability. Organizations should also establish incident response procedures to quickly address any exploitation attempts and monitor their systems for signs of compromise.