Critical Remote Code Execution Vulnerability in node-ejs Package
Summary
DEBIAN-CVE-2017-1000228: nodejs ejs versions older than 2.5.3 is vulnerable to remote code execution due to weak input validation in ejs.renderFile() function. Affects node-ejs versions < 2.5.7-1. Fixed in 2.5.7-1. How to fix ↓
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Background
The node-ejs package is a popular templating engine for Node.js, allowing developers to generate HTML markup with plain JavaScript. It is widely used in web applications for rendering dynamic content. However, versions of node-ejs prior to 2.5.3 are susceptible to a serious vulnerability that compromises the security of applications using this package.
Vulnerability Detail
The vulnerability arises from weak input validation in the ejs.renderFile() function, which can lead to remote code execution. This means that an attacker could potentially execute arbitrary code on the server by manipulating the input to this function. The implications of this vulnerability are severe, as it can allow unauthorized access to sensitive data, system control, and further exploitation of the server environment.
How To Fix
Minimum fixed version
2.5.7-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade node-ejsTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate patching is not feasible, consider implementing input validation and sanitization on user inputs before passing them to the ejs.renderFile() function. This can help mitigate the risk of remote code execution until the package is updated.
Conclusion
The node-ejs package has a critical vulnerability that can lead to remote code execution if not addressed. It is crucial for developers to update to the patched version 2.5.7-1 or later to secure their applications. Regular monitoring and input validation are also recommended to maintain security.
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FAQ
All versions of node-ejs prior to 2.5.3 are vulnerable to this issue.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without any signup.
Exploitation of this vulnerability can lead to remote code execution, allowing attackers to gain unauthorized access to the server and execute arbitrary commands.
Yes, Vulert can monitor and alert you in real-time for open-source vulnerabilities in your software using just a manifest file like package-lock.json.
Implement input validation and sanitization on user inputs to mitigate the risk until you can update the package.
References
Related vulnerabilities
Recent vulnerabilities recorded for node-ejs.
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