CVE-2012-1612 in Joomla
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the update manager in Joomla! 2.5.x before 2.5.4 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
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Analysis
by VulDB Data Team • 01/02/2025
The CVE-2012-1612 vulnerability represents a critical cross-site scripting flaw within Joomla site administrators to manage and apply software updates. The flaw enables remote attackers to execute malicious scripts within the context of authenticated user sessions, potentially compromising the entire website infrastructure and user data.
The technical nature of this vulnerability stems from insufficient input validation and output sanitization within the update manager functionality. Attackers can exploit this weakness by crafting malicious payloads that bypass security controls, allowing arbitrary web script or HTML code execution in the browser of authenticated users. The unspecified vectors suggest that multiple attack pathways exist within the update manager's processing logic, making the vulnerability particularly challenging to defend against as it could be exploited through various user interaction scenarios. This type of vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws in web applications.
The operational impact of CVE-2012-1612 extends far beyond simple script injection, as it provides attackers with elevated privileges within the Joomla! administrative environment. Once exploited, malicious actors can manipulate the update manager to install backdoors, modify website content, steal administrator credentials, or redirect users to phishing sites. The vulnerability's remote exploitability means attackers do not require physical access to the server or direct network connections to the target system, making it particularly dangerous in public-facing web applications. This weakness directly aligns with ATT&CK technique T1059.007 for command and scripting interpreter, as attackers can leverage the XSS to execute arbitrary commands through the compromised administrative interface.
Organizations running vulnerable Joomla! versions face significant risk of data breaches, website defacement, and potential complete system compromise. The update manager component typically requires administrative privileges, making successful exploitation particularly damaging as it grants attackers access to sensitive system configurations and user data. Security professionals should consider this vulnerability in the context of broader web application security frameworks, as it demonstrates the critical importance of input validation and output encoding in preventing persistent security flaws. The vulnerability's exploitation requires minimal technical skill, making it attractive to both sophisticated and novice attackers, and underscores the necessity of maintaining up-to-date software versions as a fundamental security control. Organizations should prioritize immediate patching and implement additional security measures such as web application firewalls and regular security audits to protect against similar vulnerabilities in their web infrastructure.