CVE-2008-0679 in BlogPHP
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in index.php in BlogPHP 2.0 allows remote attackers to inject arbitrary web script or HTML via the search parameter.
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Analysis
by VulDB Data Team • 10/15/2024
The vulnerability identified as CVE-2008-0679 represents a critical cross-site scripting flaw within BlogPHP 2.0's index.php script that enables remote attackers to execute malicious web scripts or HTML code through manipulation of the search parameter. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically classified as a reflected XSS attack where malicious input is immediately reflected back to the user without proper sanitization or encoding. The flaw exists due to inadequate input validation and output encoding mechanisms within the blogging platform's search functionality, creating an exploitable pathway for attackers to inject malicious code that executes in the context of other users' browsers.
The technical implementation of this vulnerability demonstrates how BlogPHP 2.0 fails to properly sanitize user input received through the search parameter in the index.php file. When a user submits a search query containing malicious script code, the application directly incorporates this unvalidated input into the HTML response without appropriate encoding or filtering measures. This allows attackers to craft specially formatted search strings that, when processed by the vulnerable application, get executed in the browsers of other users who view the search results. The attack vector operates through the standard HTTP GET parameter mechanism where the search parameter is passed directly to the server-side script without proper sanitization.
From an operational impact perspective, this vulnerability creates significant security risks for BlogPHP 2.0 installations as it enables attackers to perform various malicious activities including session hijacking, credential theft, defacement of the blog content, and redirection to malicious websites. The reflected nature of the XSS attack means that victims must click on a specially crafted link containing the malicious payload, making it particularly dangerous in social engineering scenarios where attackers might distribute compromised search URLs through phishing campaigns or compromised web forums. The vulnerability affects all users who interact with the search functionality, potentially compromising the entire user base of the blogging platform.
The exploitation of this vulnerability aligns with ATT&CK technique T1531 for 'Modify Existing Service' and T1566 for 'Phishing' as attackers can leverage the XSS flaw to redirect users to malicious sites or modify the blog's content to serve as a phishing platform. Organizations using BlogPHP 2.0 should implement immediate mitigations including input validation, output encoding, and proper parameter sanitization. The recommended defensive measures involve implementing Content Security Policy headers, utilizing proper HTML escaping for all dynamic content, and deploying input validation routines that filter out potentially malicious characters. Additionally, the vulnerability demonstrates the importance of secure coding practices and regular security assessments as outlined in OWASP Top 10 categories, particularly focusing on preventing injection flaws and ensuring proper input handling throughout web applications.