Vulnerability Description
Python oic is a Python OpenID Connect implementation. In Python oic before version 1.2.1, there are several related cryptographic issues affecting client implementations that use the library. The issues are: 1) The IdToken signature algorithm was not checked automatically, but only if the expected algorithm was passed in as a kwarg. 2) JWA `none` algorithm was allowed in all flows. 3) oic.consumer.Consumer.parse_authz returns an unverified IdToken. The verification of the token was left to the discretion of the implementator. 4) iat claim was not checked for sanity (i.e. it could be in the future). These issues are patched in version 1.2.1.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Python Openid Connect Project | Python Openid Connect | < 1.2.1 |
Related Weaknesses (CWE)
References
- https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb0249PatchThird Party Advisory
- https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1Third Party Advisory
- https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfgThird Party Advisory
- https://pypi.org/project/oic/ProductVendor Advisory
- https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb0249PatchThird Party Advisory
- https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1Third Party Advisory
- https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfgThird Party Advisory
- https://pypi.org/project/oic/ProductVendor Advisory
FAQ
What is CVE-2020-26244?
CVE-2020-26244 is a vulnerability with a CVSS score of 6.8 (MEDIUM). Python oic is a Python OpenID Connect implementation. In Python oic before version 1.2.1, there are several related cryptographic issues affecting client implementations that use the library. The issu...
How severe is CVE-2020-26244?
CVE-2020-26244 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-26244?
Check the references section above for vendor advisories and patch information. Affected products include: Python Openid Connect Project Python Openid Connect.