CVE-2008-6135 in EveryBlog
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in EveryBlog 5.x and 6.x, a module for Drupal, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 10/28/2018
The CVE-2008-6135 vulnerability represents a critical cross-site scripting flaw discovered in EveryBlog module versions 5.x and 6.x for the Drupal content management system. This vulnerability falls under the CWE-79 category of Cross-Site Scripting and specifically affects web applications that fail to properly sanitize user input before rendering it in web pages. The EveryBlog module, designed to provide blogging functionality within Drupal installations, contained insufficient input validation mechanisms that allowed malicious actors to inject arbitrary HTML and JavaScript code through unspecified attack vectors.
The technical nature of this vulnerability stems from the module's failure to implement proper output encoding and input sanitization routines when processing user-provided data. Attackers could exploit this weakness by crafting malicious payloads that would be executed in the context of other users' browsers who visited affected pages. The unspecified vectors suggest that multiple entry points within the module could be compromised, potentially including comment forms, blog post creation interfaces, or configuration parameters. This lack of specificity in the vulnerability description indicates a broad attack surface that could be leveraged through various user interaction points within the module's functionality.
The operational impact of CVE-2008-6135 extends beyond simple data theft or defacement, as it provides attackers with the ability to execute arbitrary code in victims' browsers. This capability enables sophisticated attacks such as session hijacking, credential theft, redirection to malicious sites, and the potential for privilege escalation within the affected Drupal environment. The vulnerability affects both Drupal 5.x and 6.x versions, indicating a widespread exposure across multiple major releases of the platform. Organizations running these vulnerable versions faced significant risk of compromise, as the attack could be executed remotely without requiring authentication or privileged access to the system.
Security professionals should note that this vulnerability aligns with ATT&CK technique T1566 for initial access through web application attacks and T1059 for command and script injection. The recommended mitigations include immediate upgrade to patched versions of the EveryBlog module, implementation of proper input validation and output encoding mechanisms, and deployment of web application firewalls to detect and block malicious payloads. Additionally, organizations should conduct comprehensive security assessments of their Drupal installations to identify other potentially vulnerable modules and ensure that all third-party components are regularly updated and monitored for security vulnerabilities. The incident underscores the critical importance of maintaining up-to-date security practices and the necessity of thorough code review processes for all web application components, particularly those handling user input.