CVE-2018-14481 in OSClass
Summary
by MITRE
Osclass 3.7.4 has XSS via the query string to index.php, a different vulnerability than CVE-2014-6280.
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Analysis
by VulDB Data Team • 06/22/2023
The vulnerability identified as CVE-2018-14481 affects Osclass version 3.7.4 and represents a cross-site scripting flaw that occurs when processing query strings sent to the index.php file. This security weakness allows attackers to inject malicious scripts into web pages viewed by other users, creating a persistent threat vector within the application's user interface. Unlike CVE-2014-6280 which addressed a different XSS vulnerability in the same software, this particular flaw specifically targets the parameter handling within the index.php endpoint, making it a distinct yet equally dangerous security concern.
The technical implementation of this vulnerability stems from insufficient input validation and output sanitization within the Osclass framework's core processing logic. When the application receives a query string parameter through the index.php endpoint, it fails to properly escape or filter user-supplied data before rendering it in the web response. This oversight creates an environment where malicious actors can embed javascript code or other malicious payloads within the query parameters, which then execute in the browsers of unsuspecting users who visit affected pages. The flaw operates at the application layer and requires no special privileges to exploit, making it particularly dangerous for widespread impact.
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, redirection to malicious sites, and data exfiltration from user browsers. Users who visit compromised pages may unknowingly have their browser sessions compromised, potentially leading to unauthorized access to their accounts or personal information. The vulnerability affects all users of the affected Osclass version regardless of their role or access level, making it a critical concern for website administrators and end users alike. Attackers can craft malicious URLs that, when clicked by victims, automatically execute the injected scripts without requiring any additional user interaction.
Mitigation strategies for CVE-2018-14481 should prioritize immediate patching of the affected Osclass version to the latest stable release that contains the necessary security fixes. Organizations should implement comprehensive input validation and output encoding mechanisms to prevent similar issues from occurring in other parts of their web applications. The CWE (Common Weakness Enumeration) classification for this vulnerability aligns with CWE-79, which specifically addresses cross-site scripting flaws in web applications. From an ATT&CK framework perspective, this vulnerability maps to T1203 - Exploitation for Client Execution, as it enables attackers to execute malicious code within user browsers. Additionally, implementing proper content security policies and regular security audits of web application code can help prevent similar vulnerabilities from being introduced in future development cycles.