CVE-2024-47093 in Nagvis
Summary
by MITRE • 12/19/2024
Improper neutralization of input in Nagvis before version 1.9.42 which can lead to XSS
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Analysis
by VulDB Data Team • 08/22/2025
The vulnerability identified as CVE-2024-47093 represents a critical security flaw in Nagvis versions prior to 1.9.42, specifically concerning improper input neutralization that creates opportunities for cross-site scripting attacks. This issue affects the Nagvis web-based monitoring and visualization platform that is widely used for network infrastructure monitoring and management. The vulnerability stems from insufficient sanitization of user-supplied input data within the application's processing pipeline, allowing malicious actors to inject harmful scripts that execute in the context of other users' browsers. The affected system components include various input fields and parameters that handle user data, particularly those involved in dynamic content generation and configuration management. This flaw exists at the intersection of input validation and output encoding, creating a pathway for attackers to exploit the application's trust in user-provided data.
The technical implementation of this vulnerability demonstrates a classic cross-site scripting vulnerability pattern where user input flows directly into the application's output without proper sanitization or encoding. Attackers can craft malicious payloads that, when processed by the vulnerable Nagvis application, get executed in the browsers of other users who view the affected content. The vulnerability affects multiple input vectors within the Nagvis interface, including configuration parameters, map definitions, and user-generated content fields that are subsequently rendered to end users. The flaw specifically relates to the application's failure to properly escape or sanitize special characters that have significance in web contexts, such as angle brackets, quotes, and script tags. This improper handling creates a persistent security risk where the application's trust model is violated, allowing attackers to execute arbitrary JavaScript code in the victim's browser context. The vulnerability aligns with CWE-79 which categorizes cross-site scripting flaws, and can be mapped to ATT&CK technique T1203 for exploitation through web application vulnerabilities.
The operational impact of this vulnerability extends beyond simple script execution, potentially enabling attackers to access sensitive user sessions, steal authentication tokens, perform unauthorized actions on behalf of users, or redirect victims to malicious sites. In a network monitoring environment like Nagvis, where administrators and users regularly access critical infrastructure data, this vulnerability could lead to significant security breaches. The attack surface is particularly concerning given that Nagvis is often deployed in enterprise environments where it serves as a central monitoring interface for network operations. Successful exploitation could allow attackers to compromise user sessions, access sensitive monitoring data, or manipulate the visual representation of network infrastructure. The vulnerability's impact is amplified by the fact that Nagvis is frequently used in operational technology environments where the consequences of unauthorized access can be severe. Organizations using vulnerable versions may experience unauthorized data access, session hijacking, or complete compromise of their monitoring infrastructure. The vulnerability also poses risks to business continuity as it could enable attackers to manipulate monitoring data, potentially masking actual security incidents or creating false alarms that disrupt operations.
Mitigation strategies for CVE-2024-47093 should prioritize immediate patching of Nagvis installations to version 1.9.42 or later, which contains the necessary input sanitization fixes. Organizations should implement comprehensive input validation and output encoding measures throughout their Nagvis deployments, ensuring that all user-supplied data is properly escaped before being rendered in web contexts. Network segmentation and access controls should be strengthened to limit exposure of Nagvis interfaces to untrusted users, while regular security assessments should verify that no other similar vulnerabilities exist within the application or its dependencies. Additional protective measures include implementing content security policies, using web application firewalls to monitor for suspicious input patterns, and conducting regular security training for administrators to recognize and respond to potential exploitation attempts. Security monitoring should be enhanced to detect unusual access patterns or attempts to inject malicious content into Nagvis interfaces. The remediation process should also include thorough testing of the patched environment to ensure that legitimate functionality remains intact while the vulnerability is properly addressed. Organizations should also consider implementing automated patch management processes to maintain up-to-date security configurations across all Nagvis deployments and establish incident response procedures specifically tailored to address cross-site scripting vulnerabilities in monitoring systems.