CVE-2012-2398 in ownCloud
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in files/ajax/download.php in ownCloud before 3.0.3 allows remote attackers to inject arbitrary web script or HTML via the files parameter, a different vulnerability than CVE-2012-2269.4.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 03/31/2025
The cross-site scripting vulnerability identified as CVE-2012-2398 affects the ownCloud file sharing platform version 3.0.2 and earlier, specifically targeting the ajax/download.php file component. This vulnerability represents a classic client-side attack vector that enables remote threat actors to inject malicious scripts into web applications, potentially compromising user sessions and data integrity. The flaw manifests when the application fails to properly sanitize user input passed through the files parameter, creating an opening for malicious code execution within the context of legitimate user sessions.
The technical implementation of this vulnerability resides in the insufficient validation and sanitization of input parameters within the download.php script. When users interact with the file download functionality, the application processes the files parameter without adequate filtering mechanisms to prevent script injection attempts. This oversight allows attackers to craft malicious payloads that, when executed in the victim's browser, can perform unauthorized actions including but not limited to cookie theft, session hijacking, and redirection to malicious domains. The vulnerability operates under CWE-79 which specifically addresses Cross-Site Scripting flaws in web applications, making it a well-documented and commonly exploited weakness in web security architecture.
The operational impact of this vulnerability extends beyond simple script injection, as it provides attackers with the capability to establish persistent access patterns within compromised user environments. An attacker could leverage this vulnerability to inject malicious JavaScript that captures user credentials, monitors keystrokes, or redirects users to phishing sites that appear legitimate. The attack surface becomes particularly dangerous when considering that ownCloud users typically maintain access to sensitive personal and business data, making successful exploitation a significant threat to data confidentiality and integrity. The vulnerability's classification under the ATT&CK framework as a web application attack vector demonstrates its potential for establishing initial access points within target environments.
Mitigation strategies for CVE-2012-2398 should prioritize immediate patching of affected ownCloud installations to version 3.0.3 or later, which contains the necessary input validation fixes. Organizations should implement comprehensive input sanitization measures including the use of context-specific encoding for all user-supplied data, particularly when processing file paths and parameters within AJAX requests. Additionally, deployment of web application firewalls and content security policies can provide additional layers of protection against similar injection attacks. Security teams should conduct regular vulnerability assessments targeting web application components and establish monitoring protocols to detect anomalous user behavior that might indicate exploitation attempts. The remediation process should also include user education regarding the risks of clicking suspicious links and the importance of maintaining updated software versions to prevent exploitation of known vulnerabilities.