CVE-2008-3301 in BilboBlog
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in BilboBlog 0.2.1 allow remote authenticated administrators to inject arbitrary web script or HTML via the (1) content parameter to admin/update.php, related to conflicting code in widget.php; and allow remote attackers to inject arbitrary web script or HTML via the (2) titleId parameter to head.php, reachable through index.php; the (3) t_lang[lang_copyright] parameter to footer.php; the (4) content parameter to the default URI under admin/; the (5) url, (6) t_lang[lang_admin_help], (7) t_lang[lang_admin_clear_cache], (8) t_lang[lang_admin_home], and (9) t_lang[lang_admin_logout] parameters to admin/homelink.php; and the (10) t_lang[lang_admin_new_post] parameter to admin/post.php. NOTE: some of these details are obtained from third party information.
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Analysis
by VulDB Data Team • 11/01/2024
The vulnerability described in CVE-2008-3301 represents a critical cross-site scripting weakness affecting BilboBlog version 0.2.1, a content management system that was widely used in web publishing environments. This vulnerability specifically targets authenticated administrator users who possess elevated privileges within the system, creating a significant security risk that could be exploited by malicious actors to compromise the entire web application. The flaw stems from inadequate input validation and sanitization mechanisms throughout various components of the BilboBlog administration interface, particularly within the PHP-based web application architecture.
The technical implementation of this vulnerability manifests through multiple attack vectors that demonstrate poor security practices in code design and input handling. The first vector involves the content parameter in admin/update.php, which directly interacts with widget.php and allows authenticated administrators to inject malicious scripts. This represents a classic reflected XSS vulnerability where user-supplied data is not properly escaped or validated before being rendered back to the user interface. The second vector operates through the titleId parameter in head.php, which is accessible via index.php, while the third vector targets the t_lang[lang_copyright] parameter in footer.php. These attack points indicate that the application's security controls are not consistently applied across the entire codebase, creating multiple entry points for malicious code injection.
The remaining attack vectors extend to various parameters within the admin directory, including URL parameters in admin/homelink.php and multiple t_lang parameters in admin/post.php, demonstrating how the vulnerability spans across different administrative functions. The presence of these multiple vectors indicates that the developers failed to implement consistent input validation mechanisms throughout the application's architecture. This vulnerability directly aligns with CWE-79, which defines Cross-Site Scripting as a weakness where untrusted data is used in the generation of web content without proper validation or escaping. The attack surface is further expanded by the fact that these vulnerabilities affect parameters that are typically used for legitimate administrative purposes, making the exploitation more subtle and harder to detect.
The operational impact of this vulnerability is severe and multifaceted, as it allows attackers to execute arbitrary scripts in the context of authenticated administrator sessions. This could result in complete system compromise, data theft, unauthorized content modification, and potential lateral movement within network environments. The ability for authenticated administrators to inject malicious code creates a particularly dangerous scenario where legitimate users with elevated privileges become vectors for attack. The vulnerability also aligns with ATT&CK technique T1059, which describes the use of command and scripting interpreters to execute malicious code, as the injected scripts could potentially leverage system resources or access sensitive information. The attack chain typically involves the attacker first gaining access to an administrator account, then using the XSS vulnerability to inject malicious JavaScript that could steal session cookies, redirect users to malicious sites, or modify application behavior.
Mitigation strategies for this vulnerability require immediate implementation of comprehensive input validation and output encoding measures across all user-supplied parameters. The most effective approach involves implementing proper HTML escaping and sanitization routines for all data passed through the various parameters mentioned in the vulnerability description. Organizations should implement Content Security Policy headers to limit script execution and prevent unauthorized code injection. The application should also enforce strict input validation that rejects or sanitizes potentially malicious content before processing. Additionally, the system should implement proper access controls and monitoring to detect unauthorized administrative activities. Regular security audits and code reviews should be conducted to identify similar vulnerabilities in other components of the application. The vulnerability highlights the importance of following secure coding practices and implementing defense-in-depth strategies to prevent such widespread XSS vulnerabilities from affecting critical administrative functions.