CVE-2016-1000001: Open Redirect Vulnerability in flask-oidc
Summary
CVE-2016-1000001: flask-oidc version 0.1.2 and earlier is vulnerable to an open redirect. Affects flask-oidc versions < 1.0.0. Fixed in 1.0.0. How to fix ↓
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Background
flask-oidc is a Python package available on PyPI that provides OpenID Connect (OIDC) support for Flask applications. It allows developers to integrate OIDC authentication into their Flask-based web applications. However, versions 0.1.2 and earlier of flask-oidc are vulnerable to an open redirect attack.
Vulnerability Detail
The open redirect vulnerability in flask-oidc allows an attacker to redirect users to malicious websites by manipulating the redirect_uri parameter during the OIDC authentication flow. By exploiting this vulnerability, an attacker can trick users into visiting a URL that appears legitimate but actually leads to a malicious site. This can result in various consequences, such as phishing attacks, credential theft, or the execution of arbitrary code on the user's system.
How To Fix
Minimum fixed version
1.0.0
This is the first release that contains the fix.
pip install --upgrade "flask-oidc==1.0.0"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no known workaround for this vulnerability. It is recommended to upgrade to the fixed version of flask-oidc as soon as possible.
Conclusion
In conclusion, flask-oidc versions 0.1.2 and earlier are vulnerable to an open redirect attack. Developers should upgrade to version 1.0.0 or later to fix this vulnerability. It is important to prioritize the security of your Flask applications and protect users from potential attacks. For further support on vulnerability remediation, you can reach out to DevNack.com.
See every vulnerability recorded for flask-oidc →
FAQ
You can check the version of flask-oidc by running the following command in your project's virtual environment:
pip show flask-oidc
While manual validation of the redirect_uri parameter can provide some level of protection, it is recommended to upgrade to the fixed version of flask-oidc. Manual validation may introduce implementation complexities and potential bypasses if not done correctly.
No, only versions 0.1.2 and earlier of flask-oidc are vulnerable to this open redirect issue. Versions 1.0.0 and later have addressed the vulnerability.
The open redirect vulnerability in flask-oidc can lead to various consequences, including phishing attacks, credential theft, and the execution of arbitrary code on the user's system. It is crucial to fix this vulnerability to protect users and maintain the integrity of the application.
You can find more information about this vulnerability, including its technical details and the fixed version, in the official advisory available at: https://github.com/pypa/advisory-database/blob/main/vulns/flask-oidc/PYSEC-2016-25.yaml
