What is the severity of CVE-2021-21428?

CVE-2021-21428 has been classified as a moderate severity vulnerability due to the potential for information leakage.

How do I fix CVE-2021-21428?

To fix CVE-2021-21428, update your OpenAPI Generator to version 5.1.0 or later.

What types of software are affected by CVE-2021-21428?

CVE-2021-21428 affects all versions of OpenAPI Generator prior to 5.1.0.

What is the impact of CVE-2021-21428?

The impact of CVE-2021-21428 includes the creation of insecure temporary folders that can expose sensitive data.

Can CVE-2021-21428 be exploited remotely?

CVE-2021-21428 can potentially be exploited locally if an attacker has access to the environment where the vulnerable software is running.

Vulnerability/
CVE-2021-21428

critical

9.3

CWE

668 269

10/5/2021

3/8/2024

CVE-2021-21428: Creation of Temporary File in Directory with Insecure Permissions in the OpenAPI-Generator online generator

First published: Mon May 10 2021(Updated: )

Openapi generator is a java tool which allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec. openapi-generator-online creates insecure temporary folders with File.createTempFile during the code generation process. The insecure temporary folders store the auto-generated files which can be read and appended to by any users on the system. The issue has been patched with `Files.createTempFile` and released in the v5.1.0 stable version.

Credit: security-advisories@github.com

Affected Software	Affected Version	How to fix
npm	<5.1.0

Remedy

https://github.com/OpenAPITools/openapi-generator/pull/8788

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-21428?
CVE-2021-21428 has been classified as a moderate severity vulnerability due to the potential for information leakage.
How do I fix CVE-2021-21428?
To fix CVE-2021-21428, update your OpenAPI Generator to version 5.1.0 or later.
What types of software are affected by CVE-2021-21428?
CVE-2021-21428 affects all versions of OpenAPI Generator prior to 5.1.0.
What is the impact of CVE-2021-21428?
The impact of CVE-2021-21428 includes the creation of insecure temporary folders that can expose sensitive data.
Can CVE-2021-21428 be exploited remotely?
CVE-2021-21428 can potentially be exploited locally if an attacker has access to the environment where the vulnerable software is running.

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Frequently Asked Questions

What is the severity of CVE-2021-21428?
CVE-2021-21428 has been classified as a moderate severity vulnerability due to the potential for information leakage.
How do I fix CVE-2021-21428?
To fix CVE-2021-21428, update your OpenAPI Generator to version 5.1.0 or later.
What types of software are affected by CVE-2021-21428?
CVE-2021-21428 affects all versions of OpenAPI Generator prior to 5.1.0.
What is the impact of CVE-2021-21428?
The impact of CVE-2021-21428 includes the creation of insecure temporary folders that can expose sensitive data.
Can CVE-2021-21428 be exploited remotely?
CVE-2021-21428 can potentially be exploited locally if an attacker has access to the environment where the vulnerable software is running.