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CVE-2020-26244

6.8 · MEDIUM

Python oic is a Python OpenID Connect implementation.

Published Dec 2, 2020CWE-325EPSS 0.83%

Overview

CVE-2020-26244 is a medium-severity vulnerability. It was published on December 2, 2020 and has a CVSS 3.1 base score of 6.8 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498GitHubgithub.com/OpenIDC/pyoidc/releases/tag/1.2.1GitHubgithub.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfgRefpypi.org/project/oic/GitHubgithub.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498GitHubgithub.com/OpenIDC/pyoidc/releases/tag/1.2.1GitHubgithub.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfgRefpypi.org/project/oic/

How CyberStrike helps

Frequently asked questions

What is CVE-2020-26244?

CVE-2020-26244 is a medium-severity vulnerability. It was published on December 2, 2020 and has a CVSS 3.1 base score of 6.8 (MEDIUM).

How severe is CVE-2020-26244?

This vulnerability has a CVSS 3.1 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2020-26244?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-26244?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-26244 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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