CVE-2012-3842 in DirectAdmin
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in CMD_DOMAIN in JBMC Software DirectAdmin 1.403 allow remote authenticated users with certain privileges to inject arbitrary web script or HTML via the (1) select0 or (2) select8 parameters.
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Analysis
by VulDB Data Team • 12/05/2025
The vulnerability identified as CVE-2012-3842 represents a critical cross-site scripting weakness in the CMD_DOMAIN functionality of JBMC Software DirectAdmin version 1.403. This issue affects remote authenticated users who possess specific privileges within the system, creating a significant security risk that can be exploited to execute malicious web scripts or HTML code. The vulnerability manifests through two distinct parameter injection points named select0 and select8, which are processed within the CMD_DOMAIN module of the DirectAdmin control panel interface.
This vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically representing a stored XSS variant where malicious code can be injected into the application's data handling processes. The flaw occurs because the application fails to properly sanitize or validate user input parameters before incorporating them into dynamic web content generation. When authenticated users with appropriate privileges submit data containing malicious scripts through the select0 or select8 parameters, the system processes these inputs without adequate filtering mechanisms, allowing the injected code to be executed in the context of other users' browsers.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable attackers to perform session hijacking, steal user credentials, manipulate data within the application, or redirect users to malicious websites. Since the vulnerability requires authentication with specific privileges, it represents a privilege escalation risk that can be particularly damaging in multi-user hosting environments where administrators may have elevated access to multiple customer accounts. The attack vector is particularly concerning because it operates within the legitimate administrative interface, making detection more difficult and increasing the potential for persistent attacks.
Mitigation strategies for CVE-2012-3842 should focus on implementing comprehensive input validation and output encoding mechanisms throughout the DirectAdmin application. The most effective approach involves sanitizing all user-supplied input parameters, particularly those used in dynamic content generation, through proper HTML escaping and validation routines. Security patches should be applied immediately to upgrade to versions of DirectAdmin that address this specific vulnerability, as the manufacturer likely released updates with enhanced parameter validation. Organizations should also implement web application firewalls to monitor for suspicious parameter patterns and establish regular security assessments to identify similar vulnerabilities in other components of their hosting infrastructure. The ATT&CK framework categorizes this vulnerability under T1566 for credential access through social engineering and T1059 for command and scripting interpreter, highlighting the multi-faceted nature of the threat. Additionally, implementing principle of least privilege access controls and regular security audits can help reduce the attack surface and limit potential damage from successful exploitation attempts.