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CVE-2020-26244

Cryptographic issues in Python oic

Published: Dec 2, 2020Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-325
6.8MEDIUM
NVD MITRE
EPSS Score
0.8%
Top 46.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-325CWE-347

Affected Products

OpenIDC
oss-projectaka cjose, mod_auth_openidc, mod auth openidc
pyoidcLibrary
OSS Libraries / generic-library
PyPI
package-ecosystem
oic
OSS Libraries
python openid connect project
package-ecosystemaka python openid connect, openid connect
python openid connectLibrary
OSS Libraries / generic-library

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
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References

https://github.com/OpenIDC/pyoidc/security/advisories/GHSA-4fjv-pmhg-3rfg
github.com
https://pypi.org/project/oic/
pypi.org
https://github.com/OpenIDC/pyoidc/commit/62f8d753fa17c8b1f29f8be639cf0b33afb02498
github.com
and 5 more references View all →

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