CVE-2005-1309 in bBlog
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in bBlog 0.7.4 allows remote attackers to inject arbitrary web script or HTML via the (1) entry title field or (2) comment body text.
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Analysis
by VulDB Data Team • 07/10/2019
The vulnerability identified as CVE-2005-1309 represents a critical cross-site scripting flaw within the bBlog content management system version 0.7.4. This security weakness enables malicious actors to execute arbitrary web scripts or HTML code within the context of other users' browsers, fundamentally compromising the integrity of web applications and user sessions. The vulnerability specifically affects two primary input vectors: the entry title field and the comment body text, which are common areas where user-generated content is processed and displayed within web applications.
The technical nature of this flaw stems from inadequate input validation and output encoding mechanisms within the bBlog application. When users submit content through the entry title or comment fields, the application fails to properly sanitize or escape special characters that could be interpreted as executable code by web browsers. This lack of proper sanitization creates an environment where attackers can inject malicious scripts that execute when other users view the affected content. The vulnerability maps directly to CWE-79, which defines Cross-Site Scripting as a condition where untrusted data is sent to a web browser without proper validation or escaping, allowing attackers to manipulate the intended behavior of the web application.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable attackers to perform various malicious activities including session hijacking, credential theft, data exfiltration, and redirection to malicious websites. When users browse posts containing maliciously crafted titles or comments, their browsers execute the injected scripts, potentially compromising their sessions and exposing sensitive information. The attack surface is particularly concerning given that blog platforms typically encourage user interaction through comments, making the comment body text an especially vulnerable entry point. This vulnerability aligns with ATT&CK technique T1531, which describes the exploitation of web application vulnerabilities to gain unauthorized access to systems and data.
Mitigation strategies for this vulnerability require immediate implementation of proper input sanitization and output encoding practices. The bBlog application must implement comprehensive validation of all user inputs, particularly those that are displayed in web pages, ensuring that special characters are properly escaped or removed before processing. This includes implementing strict whitelisting of allowed characters and HTML tags, as well as employing automatic encoding mechanisms for all dynamic content. System administrators should also consider implementing content security policies to further restrict script execution and prevent unauthorized code injection. The vulnerability demonstrates the critical importance of input validation in web applications and underscores the need for regular security assessments and updates to prevent exploitation of known weaknesses. Organizations using bBlog or similar platforms should prioritize immediate patching or implementation of compensating controls to address this persistent security risk.