CVE-2008-2553 in Slash
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Slashdot Like Automated Storytelling Homepage (Slash) (aka Slashcode) R_2_5_0_94 and earlier allows remote attackers to inject arbitrary web script or HTML via the userfield parameter.
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Analysis
by VulDB Data Team • 08/16/2019
The CVE-2008-2553 vulnerability represents a critical cross-site scripting flaw discovered in Slashcode version 2.5.0.94 and earlier, affecting the Slashdot Like Automated Storytelling Homepage platform. This vulnerability specifically targets the userfield parameter within the application's input handling mechanisms, creating a persistent security risk that enables malicious actors to execute unauthorized code within the context of other users' browsers. The vulnerability stems from inadequate input validation and output encoding practices within the Slashcode framework, which fails to properly sanitize user-supplied data before incorporating it into dynamic web content.
The technical implementation of this XSS vulnerability occurs when the application processes the userfield parameter without sufficient sanitization measures, allowing attackers to inject malicious scripts that can be executed by other users who view the affected content. This type of vulnerability falls under CWE-79, which specifically addresses Cross-Site Scripting flaws in web applications, and represents a classic case of insufficient output escaping where user input is directly embedded into web pages without proper context-aware encoding. The vulnerability's exploitation requires minimal prerequisites, as attackers only need to craft malicious payloads and submit them through the userfield parameter, making it particularly dangerous in environments where user-generated content is prevalent.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform session hijacking, steal sensitive cookies, redirect users to malicious websites, or even execute arbitrary commands on affected systems. When combined with other exploitation techniques, this XSS vulnerability can serve as a launching point for more sophisticated attacks, potentially leading to complete system compromise. The vulnerability affects all users of the affected Slashcode versions, making it particularly concerning for organizations that rely on this platform for content management and user interaction. Attackers can leverage this flaw to manipulate user sessions, steal authentication tokens, or redirect users to phishing sites, effectively undermining the security posture of any system hosting vulnerable versions of Slashcode.
Mitigation strategies for CVE-2008-2553 should prioritize immediate patching of affected systems to the latest stable versions of Slashcode that address the input validation issues. Organizations should implement comprehensive input sanitization mechanisms that enforce strict validation of all user-supplied data, particularly focusing on the userfield parameter and similar input vectors. The implementation of Content Security Policy headers can provide additional protection against script execution, while proper output encoding should be enforced for all dynamic content generation. Security teams should also consider implementing web application firewalls to detect and block suspicious input patterns targeting this vulnerability. According to ATT&CK framework, this vulnerability maps to T1059.007 for script execution and T1531 for credential access, emphasizing the need for layered defensive measures. Regular security assessments and input validation reviews should be conducted to prevent similar vulnerabilities from emerging in other application components, as this flaw demonstrates the critical importance of proper data sanitization in web applications. The vulnerability also highlights the necessity of maintaining up-to-date security patches and implementing robust application security testing procedures to identify and remediate such flaws before they can be exploited in the wild.