CVE-2015-0891 in Simple Board
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Maroyaka CGI Maroyaka Simple Board allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 04/14/2018
The CVE-2015-0891 vulnerability represents a critical cross-site scripting flaw within the Maroyaka CGI Simple Board application, a web-based bulletin board system that was widely deployed for community forums and discussion platforms. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically manifesting as an insecure input handling mechanism that fails to properly sanitize user-supplied data before rendering it within web pages. The affected system processes user inputs through CGI scripts without adequate validation or encoding, creating an exploitable condition that allows malicious actors to inject arbitrary web scripts or HTML content into the application's output.
The technical exploitation of this vulnerability occurs through unspecified vectors within the application's data processing pipeline, likely involving user-submitted content such as forum posts, usernames, or message titles that are not properly escaped or filtered before being displayed to other users. Attackers can craft malicious payloads that, when executed in a victim's browser, can perform actions such as stealing session cookies, redirecting users to malicious sites, or executing unauthorized commands on behalf of the victim. The vulnerability's impact extends beyond simple script injection as it can be leveraged to create persistent XSS attacks that remain active as long as the affected application continues to display the malicious content without proper sanitization.
From an operational perspective, this vulnerability presents a significant risk to organizations using the Maroyaka Simple Board system, particularly those hosting community forums, user-generated content platforms, or collaborative workspaces. The remote nature of the attack means that threat actors can exploit this weakness from anywhere on the internet without requiring physical access or local network privileges. The implications include potential data breaches, session hijacking, and the ability to compromise user accounts across the affected platform. According to ATT&CK framework, this vulnerability maps to T1531 (Account Access Removal) and T1071.001 (Application Layer Protocol: Web Protocols) as attackers can manipulate application behavior to gain unauthorized access to user sessions and exploit web communication protocols.
The mitigation strategies for this vulnerability require immediate implementation of input validation and output encoding measures across all user-facing application components. Organizations should implement proper HTML escaping for all dynamic content, utilize Content Security Policy (CSP) headers to restrict script execution, and deploy web application firewalls to detect and block malicious payloads. The remediation process involves updating the Maroyaka Simple Board software to versions that address the XSS vulnerability, implementing proper parameter validation, and establishing comprehensive input sanitization routines. Additionally, security teams should conduct regular penetration testing and code reviews to identify similar vulnerabilities in other legacy applications, as this flaw demonstrates the importance of proper input handling in web applications. The vulnerability also highlights the need for continuous security awareness training for developers to prevent similar issues in future software development cycles.