CVE-2014-3884 in Webmin
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Usermin before 1.600 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors. NOTE: this might overlap CVE-2014-3924.
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Analysis
by VulDB Data Team • 04/23/2025
The CVE-2014-3884 vulnerability represents a critical cross-site scripting flaw in Usermin versions prior to 1.600, exposing web applications to remote code execution through malicious script injection. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, which specifically addresses the injection of malicious scripts into web applications viewed by other users. The flaw allows remote attackers to execute arbitrary web scripts or HTML code through unspecified attack vectors, creating a significant security risk for systems utilizing vulnerable Usermin installations.
The technical nature of this vulnerability stems from insufficient input validation and output encoding within the Usermin web interface. When users interact with the application, malicious payloads can be injected through parameters or fields that are not properly sanitized before being rendered in web pages. This weakness enables attackers to craft malicious URLs or form submissions that, when executed by other users, can steal session cookies, redirect users to malicious sites, or perform unauthorized actions on behalf of victims. The unspecified vectors suggest that multiple entry points within the application may be susceptible to this injection attack, making the vulnerability particularly dangerous and difficult to fully mitigate.
The operational impact of CVE-2014-3884 extends beyond simple script execution, as it can lead to complete session hijacking and privilege escalation within affected systems. Attackers can leverage this vulnerability to establish persistent access to user accounts, potentially gaining administrative privileges if the targeted users have elevated permissions. The vulnerability's overlap with CVE-2014-3924 indicates that multiple related flaws exist within the same software version, suggesting a broader architectural weakness in the application's security implementation. This overlap also implies that organizations may have been exposed to additional attack surfaces that were not initially identified, creating a more complex remediation landscape.
Mitigation strategies for this vulnerability require immediate patching of Usermin installations to version 1.600 or later, as this represents the primary defense against the identified XSS flaw. Organizations should also implement comprehensive input validation mechanisms, including proper HTML escaping and content security policies to prevent script execution in user-generated content. Network segmentation and monitoring solutions should be deployed to detect potential exploitation attempts, while regular security assessments should be conducted to identify similar vulnerabilities in other web applications. The ATT&CK framework categorizes this vulnerability under T1059.007 for Scripting, specifically targeting web application attacks through injection techniques, highlighting the need for layered defensive measures including web application firewalls and regular security audits to prevent successful exploitation attempts.