CVE-2008-0676 in A-Blog
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in search.php in A-Blog 2 allows remote attackers to inject arbitrary web script or HTML via the words parameter.
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Analysis
by VulDB Data Team • 10/15/2024
The vulnerability identified as CVE-2008-0676 represents a classic cross-site scripting flaw within the A-Blog 2 content management system, specifically affecting the search.php script. This weakness resides in the improper handling of user-supplied input through the words parameter, creating an avenue for malicious actors to execute arbitrary web scripts or HTML code within the context of other users' browsers. The vulnerability classification aligns with CWE-79 which defines cross-site scripting as the injection of malicious code into web applications, making it one of the most prevalent and dangerous web application security flaws.
The technical exploitation of this vulnerability occurs when an attacker crafts malicious input containing script tags or HTML elements and submits it through the words parameter in the search.php endpoint. When the application processes this input without adequate sanitization or output encoding, the malicious code becomes embedded within the application's response and is subsequently executed by unsuspecting users who view the search results. This type of vulnerability operates under the principle that user input is not properly validated or escaped before being rendered in web pages, creating a persistent vector for code injection attacks.
The operational impact of CVE-2008-0676 extends beyond simple script execution, as it can enable attackers to perform various malicious activities including session hijacking, credential theft, defacement of web content, and redirection to malicious sites. An attacker could leverage this vulnerability to steal user sessions, inject malware delivery mechanisms, or manipulate the application's functionality to compromise the integrity of the blog platform. The vulnerability affects the confidentiality, integrity, and availability of the web application, potentially leading to complete compromise of user accounts and unauthorized access to sensitive information. According to ATT&CK framework, this vulnerability maps to T1059.007 for scripting and T1566 for phishing, as it enables attackers to deliver malicious payloads through web interfaces.
Mitigation strategies for CVE-2008-0676 require immediate implementation of input validation and output encoding measures. The application must sanitize all user-supplied input through the words parameter by implementing proper HTML entity encoding before rendering content in web responses. Additionally, developers should employ allow-list validation techniques to restrict input to expected character sets and lengths while implementing Content Security Policy headers to prevent unauthorized script execution. The vulnerability also necessitates regular security code reviews and input validation testing to prevent similar flaws from emerging in future versions. Organizations should also consider implementing web application firewalls and monitoring systems to detect and block malicious input patterns. The remediation approach aligns with OWASP Top 10 recommendations for preventing XSS vulnerabilities through proper input sanitization and output encoding practices.