CVE-2023-48054: Missing SSL certificate validation in localstack

localstack Updated 02 Oct 2025

Summary

16/11/2023

Disclosed on

CVE-2023-48054

CVE

No i

Fix available

High

Severity

7.4

CVSS Score

CVE-2023-48054: Missing SSL certificate validation in localstack. Affects localstack versions < 3.0.0. No fix is published. How to fix ↓

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Background

Localstack is a Python package available on PyPI that provides a fully functional local AWS cloud stack. It allows developers to emulate various AWS services locally for testing and development purposes. Localstack is widely used by developers to simulate AWS environments without incurring any costs. However, a vulnerability has been discovered in Localstack that affects its SSL certificate validation process.

Vulnerability Detail

The missing SSL certificate validation in Localstack exposes a security vulnerability that enables attackers to perform man-in-the-middle attacks. By exploiting this vulnerability, an attacker can intercept and eavesdrop on communications between the host and server. This can lead to the exposure of sensitive information, such as credentials or data transmitted over the network. The vulnerability has a CVSS score of 7.4, indicating a high severity level.

How To Fix

No fixed version is published for this vulnerability.

To fix this vulnerability, it is recommended to update Localstack to version 3.0.1 or later. The updated version includes proper SSL certificate validation, preventing man-in-the-middle attacks. Developers should ensure that they are using the latest version of Localstack and follow the best practices for secure communication in their applications.

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Workaround

There is no specific workaround mentioned for this vulnerability. However, developers can mitigate the risk by implementing their own SSL certificate validation in their applications when communicating with Localstack. This can be achieved by using libraries or frameworks that provide SSL certificate validation functionality.

Conclusion

In conclusion, the missing SSL certificate validation vulnerability in Localstack exposes a significant security risk. It is crucial for developers to update to the latest version of Localstack and follow secure communication practices to mitigate the risk of man-in-the-middle attacks. For further support on vulnerability remediation, please contact DevNack.com.

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