CVE-2020-26244
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.
How to fix
- python_openid_connect_project python_openid_connect1.2.1 or later
- oic1.2.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| python_openid_connect_project python_openid_connect | v < 1.2.1 | 1.2.1 |
| oicPyPI | v < 1.2.1 | 1.2.1 |
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