CVE-2013-6923 in BlackArmor NAS 220
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Seagate BlackArmor NAS 220 devices with firmware sg2000-2000.1331 allow remote attackers to inject arbitrary web script or HTML via the (1) fullname parameter to admin/access_control_user_edit.php or (2) workname parameter to admin/network_workgroup_domain.php.
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Analysis
by VulDB Data Team • 06/22/2024
The CVE-2013-6923 vulnerability represents a critical cross-site scripting flaw affecting Seagate BlackArmor NAS 220 devices running specific firmware versions. This vulnerability exposes the network-attached storage system to remote exploitation through improperly validated user input parameters. The flaw exists within the web administration interface of the device, creating a pathway for malicious actors to execute arbitrary scripts in the context of authenticated users' browsers. The vulnerability specifically targets two distinct input vectors within the device's management interface, highlighting the widespread nature of the input validation failure across different administrative functions.
The technical implementation of this vulnerability stems from insufficient sanitization of user-supplied data within the web application's backend processing. Attackers can exploit the fullname parameter in the admin/access_control_user_edit.php endpoint and the workname parameter in the admin/network_workgroup_domain.php endpoint to inject malicious scripts. These parameters receive user input without proper validation or encoding, allowing attackers to inject HTML content that gets executed when the page renders. The vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws where untrusted data is incorporated into web pages without proper sanitization. The attack vector is particularly dangerous because it requires no authentication to exploit, making it a remote code execution threat that can be leveraged by anyone with network access to the device.
The operational impact of this vulnerability extends beyond simple script injection, potentially enabling attackers to perform session hijacking, steal administrative credentials, or gain unauthorized access to sensitive data stored on the NAS device. When an authenticated user visits a maliciously crafted page or interacts with the vulnerable web interface, the injected scripts execute in their browser context, potentially compromising the entire network storage system. The vulnerability's remote nature means that attackers can exploit it from anywhere on the internet, provided they can reach the device's administrative interface. This creates a significant risk for organizations that expose their NAS devices directly to external networks without proper network segmentation or firewall rules. The ATT&CK framework categorizes this vulnerability under T1059.007 for command and scripting interpreter, as the exploitation allows for arbitrary script execution within the user context.
Mitigation strategies for CVE-2013-6923 should focus on immediate firmware updates from Seagate to address the validation flaws in the affected devices. Organizations must ensure that all BlackArmor NAS 220 devices are updated to firmware versions that properly sanitize user input parameters. Network segmentation should be implemented to restrict access to the device's administrative interface, limiting exposure to only authorized personnel. Additional protective measures include implementing web application firewalls to detect and block malicious script injection attempts, and establishing monitoring procedures to identify potential exploitation attempts. Security teams should also conduct regular vulnerability assessments of network-attached storage devices and ensure that proper input validation mechanisms are in place across all web applications. The remediation process must include thorough testing of updated firmware to ensure that the XSS vulnerabilities are fully addressed while maintaining device functionality. Organizations should also implement principle of least privilege access controls for administrative interfaces and consider disabling unnecessary web services to reduce the attack surface of these network storage devices.