Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 26.0%
CVSS Severity
CVSS v3 Score 7.4
CVSS v2 Score 5.8
References
- https://github.com/auth0/omniauth-auth0/commit/fd3a14f4ccdfbc515d1121d6378ff88bf55a7a7a
- https://github.com/auth0/omniauth-auth0/security/advisories/GHSA-58r4-h6v8-jcvm
- https://rubygems.org/gems/omniauth-auth0
- https://github.com/auth0/omniauth-auth0/commit/fd3a14f4ccdfbc515d1121d6378ff88bf55a7a7a
- https://github.com/auth0/omniauth-auth0/security/advisories/GHSA-58r4-h6v8-jcvm
- https://rubygems.org/gems/omniauth-auth0
Products affected by CVE-2020-15240
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cpe:2.3:a:auth0:omniauth-auth0:2.3.0
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cpe:2.3:a:auth0:omniauth-auth0:2.3.1
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cpe:2.3:a:auth0:omniauth-auth0:2.4.0