CVE-2006-2246 in UBlog
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in UBlog 1.6 Access Edition allows remote attackers to inject arbitrary web script or HTML via text fields when adding a blog entry.
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Analysis
by VulDB Data Team • 07/26/2018
The vulnerability described in CVE-2006-2246 represents a classic cross-site scripting flaw that existed within UBlog 1.6 Access Edition software. This type of vulnerability falls under the broader category of injection attacks and specifically manifests as a client-side code injection vector that can be exploited by remote attackers without requiring any special privileges or authentication. The flaw resides in the blog application's handling of user input within text fields used for creating new blog entries, making it particularly dangerous as it directly impacts the content management functionality that users rely on for publishing information to web audiences.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding mechanisms within the UBlog application. When users submit content through text fields during blog entry creation, the application fails to properly sanitize or escape the input before rendering it back to users' browsers. This omission creates an environment where malicious actors can embed javascript code or html markup within the text fields, which then executes in the context of other users' browsers when they view the affected blog entries. The vulnerability operates at the application layer and specifically targets the web interface components that process and display user-generated content.
The operational impact of this vulnerability extends beyond simple script execution as it can enable attackers to perform various malicious activities including session hijacking, credential theft, data exfiltration, and defacement of the affected blog. Users who view compromised blog entries become victims of the attack as their browsers execute the injected malicious code, potentially leading to unauthorized access to their accounts or exposure of sensitive information. The attack vector is particularly concerning because it requires no user interaction beyond viewing the malicious content, making it a passive threat that can affect anyone who visits the compromised blog. This vulnerability directly violates security principles related to input validation and output encoding, creating a persistent threat that can remain active as long as the vulnerable application remains deployed.
Mitigation strategies for this vulnerability should focus on implementing robust input sanitization and output encoding mechanisms throughout the application's data handling processes. The primary defense involves ensuring that all user-supplied content is properly escaped or sanitized before being rendered back to browsers, particularly in contexts where dynamic content is displayed. Organizations should implement proper content security policies and utilize web application firewalls to detect and prevent malicious script injection attempts. Additionally, regular security updates and patches should be applied to ensure that known vulnerabilities are addressed promptly. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and it can be mapped to ATT&CK technique T1566.001 for the initial access phase through malicious web content, and T1071.001 for the application layer protocol usage in executing the malicious scripts. Regular security testing including dynamic application security testing and manual penetration testing should be conducted to identify similar vulnerabilities in other components of the web application stack.