Description
Nest is a framework for building scalable Node.js server-side applications. In versions 0.2.0 and below, a critical Remote Code Execution (RCE) vulnerability was discovered in the @nestjs/devtools-integration package. When enabled, the package exposes a local development HTTP server with an API endpoint that uses an unsafe JavaScript sandbox (safe-eval-like implementation). Due to improper sandboxing and missing cross-origin protections, any malicious website visited by a developer can execute arbitrary code on their local machine. The package adds HTTP endpoints to a locally running NestJS development server. One of these endpoints, /inspector/graph/interact, accepts JSON input containing a code field and executes the provided code in a Node.js vm.runInNewContext sandbox. This is fixed in version 0.2.1.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2025-23413
1. Vulnerability Assessment and Severity Evaluation
Vulnerability Description:
The vulnerability affects the @nestjs/devtools-integration package in versions 0.2.0 and below. It involves a critical Remote Code Execution (RCE) flaw due to improper sandboxing and missing cross-origin protections in a local development HTTP server. This allows any malicious website visited by a developer to execute arbitrary code on their local machine.
Severity Evaluation:
The vulnerability has a base score of 9.4 according to CVSS 4.0, indicating a critical severity level. The vector string CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H highlights the following:
- Attack Vector (AV): Adjacent network
- Attack Complexity (AC): Low
- Attack Technique (AT): Network
- Privileges Required (PR): None
- User Interaction (UI): None
- Vulnerability Characteristics (VC, VI, VA): High
- Scope (SC, SI, SA): High
This high severity is due to the potential for complete system compromise with minimal effort from the attacker.
2. Potential Attack Vectors and Exploitation Methods
Attack Vectors:
- Malicious Websites: An attacker can host a malicious website that, when visited by a developer running a vulnerable version of the NestJS development server, can exploit the RCE vulnerability.
- Phishing Campaigns: Attackers can use phishing emails to lure developers into visiting malicious websites.
- Compromised Ad Networks: Malicious ads served through compromised ad networks can also exploit this vulnerability.
Exploitation Methods:
- JSON Input Manipulation: The attacker can send a specially crafted JSON payload to the
/inspector/graph/interactendpoint, which contains acodefield with malicious JavaScript code. - Node.js vm.runInNewContext Sandbox: The malicious code is executed within the Node.js
vm.runInNewContextsandbox, which is not properly secured, allowing for arbitrary code execution.
3. Affected Systems and Software Versions
Affected Systems:
- Developers using the NestJS framework with the
@nestjs/devtools-integrationpackage enabled. - Local development environments where the vulnerable package is active.
Affected Software Versions:
@nestjs/devtools-integrationversions 0.2.0 and below.
4. Recommended Mitigation Strategies
Immediate Actions:
- Update to Safe Version: Upgrade to version 0.2.1 or later of the
@nestjs/devtools-integrationpackage. - Disable Devtools Integration: If an immediate update is not possible, disable the
@nestjs/devtools-integrationpackage.
Long-Term Mitigations:
- Network Segmentation: Isolate development environments from the internet to reduce the attack surface.
- Regular Audits: Conduct regular security audits of third-party packages and dependencies.
- Security Training: Educate developers on the risks of visiting unknown or untrusted websites while running development servers.
5. Impact on European Cybersecurity Landscape
Regional Impact:
- Developer Community: The vulnerability poses a significant risk to the European developer community using NestJS, potentially leading to data breaches and unauthorized access.
- Supply Chain: Compromised development environments can introduce vulnerabilities into the software supply chain, affecting downstream users and customers.
- Compliance: Organizations may face compliance issues with regulations such as GDPR if sensitive data is compromised due to this vulnerability.
Mitigation Efforts:
- Collaboration: European cybersecurity agencies should collaborate with open-source communities to identify and mitigate similar vulnerabilities.
- Awareness Campaigns: Increase awareness among developers and organizations about the importance of secure coding practices and regular updates.
6. Technical Details for Security Professionals
Technical Overview:
- Vulnerable Endpoint:
/inspector/graph/interact - Exploitation Mechanism: The endpoint accepts JSON input with a
codefield, which is executed in a Node.jsvm.runInNewContextsandbox. - Sandboxing Issue: The sandbox implementation is unsafe, allowing for arbitrary code execution.
Detection and Monitoring:
- Network Monitoring: Monitor for unusual outbound connections from development environments.
- Log Analysis: Analyze logs for suspicious activities related to the
/inspector/graph/interactendpoint. - Intrusion Detection Systems (IDS): Implement IDS to detect and alert on potential exploitation attempts.
Patch Analysis:
- Fixed Version: The vulnerability is fixed in version 0.2.1 of the
@nestjs/devtools-integrationpackage. - Patch Details: The patch addresses the sandboxing issue and adds necessary cross-origin protections to prevent unauthorized code execution.
References:
By addressing this vulnerability promptly and implementing robust security measures, organizations can significantly reduce the risk of exploitation and protect their development environments.