CVE-2006-1135 in sBlog
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in sBlog 0.7.2 allow remote attackers to inject arbitrary web script or HTML via the (1) keyword parameter to search.php or (2) username parameter to comments_do.php.
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Analysis
by VulDB Data Team • 07/20/2018
The vulnerability identified as CVE-2006-1135 represents a critical security flaw in sBlog version 0.7.2 that exposes the application to multiple cross-site scripting attacks. This vulnerability manifests through two distinct attack vectors that exploit improper input validation mechanisms within the blogging platform's core functionality. The first vector targets the keyword parameter in the search.php script, while the second targets the username parameter in comments_do.php, both of which fail to properly sanitize user-supplied data before processing or rendering it within web pages.
The technical implementation of this vulnerability stems from the application's failure to implement proper input sanitization and output encoding mechanisms. When user input is directly incorporated into web page content without adequate validation or encoding, malicious actors can inject malicious scripts that execute in the context of other users' browsers. This occurs because the vulnerable parameters accept arbitrary data that is then rendered back to users without proper security measures to prevent script execution. The vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws where web applications fail to properly validate or encode user input before incorporating it into dynamically generated web pages.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it enables attackers to manipulate the application's behavior and compromise user sessions. Remote attackers can leverage these vulnerabilities to execute malicious scripts in victims' browsers, potentially leading to session hijacking, credential theft, or the redirection of users to malicious websites. The attack surface is particularly concerning because it affects core application functions - search capabilities and comment submission - which are frequently accessed by users, making exploitation both likely and persistent. This vulnerability also aligns with ATT&CK technique T1566, which covers the exploitation of web applications through input injection attacks.
Mitigation strategies for CVE-2006-1135 should focus on implementing robust input validation and output encoding practices throughout the application. Developers must ensure that all user-supplied input is properly sanitized before being processed or displayed, utilizing techniques such as HTML entity encoding for output rendering. The implementation of Content Security Policy headers can provide additional defense-in-depth measures to prevent script execution. Organizations should also implement proper parameter validation, employ secure coding practices, and conduct regular security testing to identify similar vulnerabilities. The vulnerability demonstrates the critical importance of input validation as outlined in the OWASP Top Ten security principles, where improper input handling consistently ranks among the most prevalent web application security risks.