CVE-2020-15240

omniauth-auth0 (rubygems) versions >= 2.3.0 and < 2.4.1 improperly validate the JWT token signature when using the `jwt_validator.verify` method. Improper validation of the JWT token signature can allow an attacker to bypass authentication and authorization. You are affected by this vulnerability if all of the following conditions apply: 1. You are using `omniauth-auth0`. 2. You are using `JWTValidator.verify` method directly OR you are not authenticating using the SDK’s default Authorization Code Flow. The issue is patched in version 2.4.1.

CVSS v3 9.1 CRITICAL
CVSS v2.0 5.8 MEDIUM

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

5.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:N

Exploitability : 8.6 / Impact : 4.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/auth0/omniauth-auth0/commit/fd3a14f4ccdfbc515d1121d6378ff88bf55a7a7a	Patch Third Party Advisory
https://github.com/auth0/omniauth-auth0/security/advisories/GHSA-58r4-h6v8-jcvm	Third Party Advisory
https://rubygems.org/gems/omniauth-auth0	Product Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:auth0:omniauth-auth0:*:*:*:*:*:ruby:*:*

History

18 Nov 2021, 16:21

Type	Values Removed	Values Added
CWE	~~CWE-287~~

Information

Published : 2020-10-21 18:15

Updated : 2023-12-10 13:41

NVD link : CVE-2020-15240

Mitre link : CVE-2020-15240

CVE.ORG link : CVE-2020-15240

JSON object : View

Products Affected

auth0

omniauth-auth0

CWE

CWE-347

Improper Verification of Cryptographic Signature

CWE-287

Improper Authentication

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