CVE-2005-3494 in Ar-blog
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Ar-blog 5.2 and earlier allows remote attackers to inject arbitrary web script or HTML via a blog comment.
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Analysis
by VulDB Data Team • 07/12/2018
The CVE-2005-3494 vulnerability represents a classic cross-site scripting flaw that affected Ar-blog version 5.2 and earlier implementations. This security weakness resides in the application's handling of user-generated content within blog comments, creating an avenue for malicious actors to execute arbitrary web scripts or HTML code in the context of other users' browsers. The vulnerability stems from insufficient input validation and output encoding mechanisms within the blogging platform's comment processing functionality.
This XSS vulnerability operates through a straightforward attack vector where remote adversaries can craft malicious comments containing script tags or other HTML elements that get rendered on the blog page without proper sanitization. When other users view these compromised comments, their browsers execute the embedded malicious code, potentially leading to session hijacking, credential theft, or redirection to malicious websites. The flaw specifically impacts the comment submission and display functionality, making it particularly dangerous in environments where multiple users interact with blog content regularly.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to manipulate the entire user experience on the affected blog platform. Depending on the sophistication of the injected payload, attackers could steal session cookies to impersonate legitimate users, modify blog content, or redirect users to phishing sites designed to capture credentials. The vulnerability affects the integrity and confidentiality of user data within the blogging environment, potentially compromising user privacy and the overall security posture of the web application.
Security practitioners should implement comprehensive input validation and output encoding mechanisms to address this vulnerability. The recommended mitigations include implementing strict sanitization of user inputs, particularly in comment fields, and employing proper HTML escaping techniques before rendering any user-generated content. Organizations should also consider implementing content security policies and regular security assessments to identify similar vulnerabilities in web applications. This vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and represents a common attack pattern categorized under ATT&CK technique T1566 for initial access through malicious content. The remediation approach should involve comprehensive code review and the implementation of secure coding practices to prevent similar vulnerabilities from emerging in future versions of the software.