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CVE

CWE

Training

CVE-2020-26244

Published: Dec 2, 2020

Modified: Aug 4, 2024

PUBLISHED

CVSS v3.1

6.8

MEDIUM

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.

Vendor	Product	Versions
OpenIDC	pyoidc	affected `< 1.2.1`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

References

https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg

x_refsource_CONFIRM

https://pypi.org/project/oic/

x_refsource_MISC

https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498

x_refsource_MISC

https://github.com/OpenIDC/pyoidc/releases/tag/1.2.1

x_refsource_MISC

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