Improper Audience Validation in Auth0 Symfony SDK (5.0.0 - 5.5.0)
Summary
GHSA-f3r2-88mq-9v4g: Auth0 Symfony SDK has Improper Audience Validation via Auth0-PHP SDK. Affects auth0/symfony versions >= 5.0.0, < 5.6.0. Fixed in 5.6.0. How to fix ↓
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Background
The Auth0 Symfony SDK is a library that facilitates the integration of Auth0 authentication services into Symfony applications. It provides developers with tools to manage user authentication, authorization, and session management seamlessly. However, versions 5.0.0 to 5.5.0 of this SDK are vulnerable due to improper audience validation, which can lead to security risks if not addressed.
Vulnerability Detail
The vulnerability arises from the improper validation of audience claims in access tokens when using the Auth0-PHP SDK. This flaw allows applications to mistakenly accept ID tokens as access tokens, potentially leading to unauthorized access and security breaches. The issue is particularly concerning as it undermines the integrity of the authentication process, allowing malicious actors to exploit the system.
How To Fix
Minimum fixed version
5.6.0
This is the first release that contains the fix.
composer require auth0/symfony:5.6.0Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
Currently, there are no specific workarounds mentioned for this vulnerability. The recommended action is to upgrade to the patched version as soon as possible.
Conclusion
In summary, the Auth0 Symfony SDK versions 5.0.0 to 5.5.0 are vulnerable to improper audience validation, which can lead to significant security risks. It is crucial to upgrade to version 5.6.0 or higher to mitigate these risks and ensure the integrity of your application's authentication process.
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FAQ
The impact includes the potential for unauthorized access to applications, as ID tokens may be accepted as valid access tokens.
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Versions 5.0.0 to 5.5.0 of the Auth0 Symfony SDK are affected by this vulnerability.
The CVSS score of this vulnerability is 6.8, indicating a moderate severity level.
The vulnerability was discovered by Jafar Sadiq (iaf4r) and was disclosed responsibly.
References
Related vulnerabilities
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