CVE-2020-28246: Server-Side Template Injection in formio
Summary
CVE-2020-28246: Server-Side Template Injection in formio. Affects formio versions < 2.0.0. No fix is published. How to fix ↓
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Background
Form.io is an open-source JavaScript framework that allows developers to build forms and generate form-based applications. It provides a user-friendly interface for creating and managing forms, as well as handling form submissions. The vulnerability in Form.io version 2.0.0 allows for Server-Side Template Injection (SSTI) during the deletion of the default Email template URL.
Vulnerability Detail
The Server-Side Template Injection (SSTI) vulnerability in Form.io 2.0.0 enables an attacker to execute remote code by injecting malicious templates. This can lead to unauthorized access, data leakage, or even complete compromise of the affected system. The vulnerability arises due to improper input validation and sanitization during the deletion process of the default Email template URL.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, it is advised to disable the deletion functionality of the default Email template URL in Form.io until the vulnerability is patched. This can be achieved by modifying the code responsible for handling the deletion process. Here is an example of how to disable the deletion functionality:
// Disable deletion of default Email template URL
function deleteDefaultEmailTemplate() {
// Add code here to prevent deletion
}
Conclusion
In conclusion, the Server-Side Template Injection vulnerability in Form.io version 2.0.0 can lead to remote code execution and compromise of the affected system. It is crucial to update to a patched version or apply the recommended workaround to mitigate the vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
Form.io is an open-source JavaScript framework for building forms and form-based applications. It provides a user-friendly interface for creating and managing forms, as well as handling form submissions.
Server-Side Template Injection (SSTI) is a vulnerability that allows an attacker to inject malicious templates into a server-side template engine. This can lead to remote code execution and potential compromise of the affected system.
The vulnerability in Form.io occurs due to improper input validation and sanitization during the deletion process of the default Email template URL. This allows an attacker to inject malicious templates and execute remote code.
The potential consequences of this vulnerability include unauthorized access to sensitive information, data leakage, and complete compromise of the affected system. An attacker can execute arbitrary code, leading to various malicious activities.
Yes, the developers of Form.io have released a fix in a subsequent version that addresses the Server-Side Template Injection vulnerability. It is recommended to update to the latest version to mitigate the vulnerability.
References
Related vulnerabilities
Recent vulnerabilities recorded for formio.
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