CVE-2020-26244

Published Dec 2, 2020

Last updated 3 months ago

Overview

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.
Source
security-advisories@github.com
NVD status
Modified

Risk scores

CVSS 3.1

Type
Primary
Base score
6.8
Impact score
5.2
Exploitability score
1.6
Vector string
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Severity
MEDIUM

CVSS 2.0

Type
Primary
Base score
4.9
Impact score
4.9
Exploitability score
6.8
Vector string
AV:N/AC:M/Au:S/C:P/I:P/A:N

Weaknesses

security-advisories@github.com
CWE-325
nvd@nist.gov
CWE-347

Social media

Hype score
Not currently trending

Configurations