CVE-2012-2901 in Joomla Content Editor
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the Profile List in the Joomla Content Editor (JCE) component before 2.1 for Joomla! allows remote attackers to inject arbitrary web script or HTML via the search parameter to administrator/index.php.
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Analysis
by VulDB Data Team • 04/18/2019
The CVE-2012-2901 vulnerability represents a critical cross-site scripting flaw within the Joomla Content Editor component that affected versions prior to 2.1. This vulnerability specifically targets the Profile List functionality within the administrator interface, creating a pathway for remote attackers to execute malicious code through carefully crafted input. The vulnerability exists in the way the application processes search parameters within the administrator/index.php endpoint, making it particularly dangerous as it operates within the administrative context where elevated privileges and access to sensitive system functions are already present. The flaw allows attackers to inject arbitrary web scripts or HTML content that executes in the context of authenticated administrator sessions, potentially leading to complete system compromise.
The technical implementation of this vulnerability stems from insufficient input validation and output sanitization within the JCE component's Profile List feature. When users perform searches within the administrator interface, the application fails to properly escape or validate the search parameter before rendering it in the web page response. This classic XSS vulnerability falls under CWE-79 which specifically addresses Cross-Site Scripting flaws in software applications. The vulnerability operates at the application layer where user input is directly incorporated into dynamically generated web content without proper security controls. Attackers can exploit this by crafting malicious payloads that include script tags or other HTML elements within the search parameter, which then get executed when the administrator views the search results page.
The operational impact of CVE-2012-2901 is severe and potentially devastating for affected Joomla installations. Since the vulnerability operates within the administrator interface, successful exploitation could allow attackers to gain full administrative control over the Joomla site. This includes the ability to modify content, create new user accounts with elevated privileges, access sensitive data, and potentially escalate the attack to compromise the underlying server infrastructure. The vulnerability is particularly dangerous because it requires minimal user interaction from the administrator to be exploited, as the malicious script executes automatically when the administrator views the affected search results. This makes it a prime target for automated attacks and increases the potential for widespread compromise across multiple Joomla installations.
Mitigation strategies for CVE-2012-2901 should focus on immediate remediation through official updates and patches provided by the Joomla community. Organizations should prioritize upgrading to JCE component version 2.1 or later, which contains the necessary security fixes to prevent the injection of malicious content. Additionally, implementing proper input validation and output encoding mechanisms within the application code can provide defense-in-depth protection against similar vulnerabilities. Network-level protections such as web application firewalls and content security policies can help detect and block malicious payloads attempting to exploit this vulnerability. The ATT&CK framework categorizes this type of vulnerability under T1059.008 for Scripting and T1566.001 for Phishing, highlighting the need for both technical and user awareness-based defenses. Regular security audits and input validation testing should be implemented to prevent similar vulnerabilities from emerging in other components of the Joomla ecosystem.