CVE-2018-9281 in UPS 9PX 8000 SP
Summary
by MITRE
An issue was discovered on Eaton UPS 9PX 8000 SP devices. The administration panel is vulnerable to a CSRF attack on the change-password functionality. This vulnerability could be used to force a logged-in administrator to perform a silent password update. The affected forms are also vulnerable to Reflected Cross-Site Scripting vulnerabilities. This flaw could be triggered by driving an administrator logged into the Eaton application to a specially crafted web page. This attack could be done silently.
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Analysis
by VulDB Data Team • 04/06/2020
The CVE-2018-9281 vulnerability affects Eaton UPS 9PX 8000 SP devices and represents a critical security flaw in the administration panel's web interface. This vulnerability stems from insufficient protection mechanisms in the password change functionality, creating a pathway for attackers to manipulate administrative sessions without user consent. The issue specifically targets the device's web-based management interface, which is commonly used by system administrators to configure and monitor uninterruptible power supply systems in enterprise environments. The vulnerability's impact extends beyond simple password changes as it combines multiple attack vectors, creating a comprehensive threat landscape for network administrators.
The technical implementation of this vulnerability demonstrates a classic Cross-Site Request Forgery (CSRF) flaw in the device's web application architecture. The CSRF vulnerability exists because the application fails to implement proper anti-CSRF tokens or validation mechanisms when processing password change requests. This allows an attacker to craft malicious web pages that, when visited by an authenticated administrator, automatically submit password change requests to the vulnerable device. The flaw is particularly dangerous because it operates silently in the background, requiring no user interaction beyond visiting a malicious page. The vulnerability also includes reflected Cross-Site Scripting (XSS) components, which means that the malicious payload can be embedded in URLs or form parameters and executed when the administrator visits the crafted page. This dual vulnerability creates a particularly dangerous attack surface where an attacker can not only change passwords but also inject malicious scripts that could persist in the administrator's browser session.
The operational impact of CVE-2018-9281 is severe for organizations relying on Eaton UPS devices for critical infrastructure protection. When exploited, this vulnerability allows attackers to silently assume administrative control of power distribution systems, potentially leading to unauthorized access to sensitive network resources or complete system compromise. The attack vector is particularly insidious because it leverages the trust relationship between the administrator and the device, making it difficult to detect. According to CWE-352, this vulnerability maps directly to Cross-Site Request Forgery weaknesses, while the reflected XSS component aligns with CWE-79, which addresses cross-site scripting vulnerabilities. The ATT&CK framework categorizes this as a credential access technique under T1078, where adversaries compromise legitimate credentials to maintain access to systems. The vulnerability's exploitation could lead to significant operational disruptions, especially in environments where UPS systems are critical for maintaining business continuity and preventing data loss during power outages.
Mitigation strategies for CVE-2018-9281 should focus on implementing multiple defensive layers to protect against both the CSRF and XSS components of the attack. Organizations should immediately apply the vendor-provided security patches or firmware updates that address these vulnerabilities. Network segmentation and access control measures should be implemented to limit direct administrative access to these devices, reducing the attack surface. Web application firewalls should be configured to detect and block suspicious requests targeting the affected functionality. Additionally, administrators should be trained to recognize potential social engineering attacks that could lead to visiting malicious pages. The implementation of proper CSRF token validation mechanisms and input sanitization for all web forms should be enforced across all network management interfaces. Security monitoring should include detection of unusual administrative activities and unauthorized password changes, as these could indicate successful exploitation attempts. Organizations should also consider implementing network-based security controls that can identify and block traffic patterns associated with known exploit payloads, particularly those targeting web application vulnerabilities in power management systems.