CVE-2025-3840 in OVA based Connect
Summary
by MITRE • 04/21/2025
An improper neutralization of input vulnerability was identified in the End of Life (EOL) OVA based connect installer component which is deployed for installation purposes in a customer network. This EOL component was deprecated in September 2023 with end of support extended till January 2024. An actor can manipulate the action parameter of the login form to inject malicious scripts which would lead to a XSS attack under certain conditions.
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Analysis
by VulDB Data Team • 04/21/2025
The vulnerability described in CVE-2025-3840 represents a critical security flaw within an end-of-life ova based connect installer component that was officially deprecated in September 2023 with extended support ending in January 2024. This component, despite its deprecated status, continues to be deployed in customer networks, creating a persistent security risk that attackers can exploit. The vulnerability specifically resides in the improper neutralization of input within the login form's action parameter, which constitutes a classic cross-site scripting vulnerability that falls under CWE-79 - Improper Neutralization of Input During Web Page Generation. The presence of this vulnerability in a deprecated component underscores the ongoing risks associated with legacy software deployments that remain active in production environments long after their official support lifecycle has ended.
The technical exploitation of this vulnerability occurs through manipulation of the action parameter within the login form, allowing an attacker to inject malicious scripts that can execute within the context of a victim's browser session. This type of input validation failure enables attackers to perform cross-site scripting attacks that can potentially steal session cookies, redirect users to malicious sites, or execute arbitrary code within the victim's browser environment. The vulnerability's conditionality suggests that specific circumstances must be met for successful exploitation, potentially involving user interaction or specific browser configurations that make the attack vector more effective. This weakness directly maps to ATT&CK technique T1531 - Use of Web Services and T1203 - Exploitation for Client Execution, demonstrating how legacy components can provide attackers with persistent entry points that bypass modern security controls.
The operational impact of this vulnerability extends beyond immediate exploitation as it represents a significant risk to customer network security postures. Organizations that continue to maintain deprecated components in their production environments face increased exposure to sophisticated attacks that can leverage such flaws to establish persistent access or escalate privileges within their networks. The fact that this vulnerability exists in a component that was already deprecated indicates potential gaps in organizational change management processes and security monitoring that allow outdated software to remain operational. This situation creates a dangerous precedent where organizations may underestimate the risks associated with legacy systems, particularly when they continue to function in production environments despite official deprecation notices and end-of-life announcements that typically signal the cessation of security updates and support.
Organizations should immediately cease deployment of this deprecated component and implement comprehensive inventory management processes to identify and remove all instances of deprecated software from their networks. The recommended mitigations include implementing robust input validation and output encoding mechanisms for all web applications, particularly those handling user input through login forms or other interactive elements. Additionally, organizations should establish automated monitoring systems to detect and alert on deprecated software components that remain active in their environments, as well as implement regular security assessments that specifically target legacy system components. The vulnerability also highlights the importance of maintaining up-to-date security awareness training for development and operations teams to ensure proper handling of deprecated components and adherence to security best practices that prevent the deployment of vulnerable software in production environments.