Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTU4cjQtaDZ2OC1qY3Zt

Regression in JWT Signature Validation

Overview

Versions after and including 2.3.0 are improperly validating the JWT token signature when using the JWTValidator.verify method. Improper validation of the JWT token signature when not using the default Authorization Code Flow can allow an attacker to bypass authentication and authorization.

Am I affected?

You are affected by this vulnerability if all of the following conditions apply:

• You are using omniauth-auth0.
• You are using JWTValidator.verify method directly OR you are not authenticating using the SDK’s default Authorization Code Flow.

How to fix that?

Upgrade to version 2.4.1.

Will this update impact my users?

The fix provided in this version will not affect your users.

Permalink: https://github.com/advisories/GHSA-58r4-h6v8-jcvm
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTU4cjQtaDZ2OC1qY3Zt
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 3 years ago
Updated: about 1 year ago

CVSS Score: 7.4
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Identifiers: GHSA-58r4-h6v8-jcvm, CVE-2020-15240
References:

• https://github.com/auth0/omniauth-auth0/security/advisories/GHSA-58r4-h6v8-jcvm
• https://nvd.nist.gov/vuln/detail/CVE-2020-15240
• https://github.com/auth0/omniauth-auth0/commit/fd3a14f4ccdfbc515d1121d6378ff88bf55a7a7a
• https://rubygems.org/gems/omniauth-auth0
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/omniauth-auth0/CVE-2020-15240.yml
• https://github.com/advisories/GHSA-58r4-h6v8-jcvm

Repository: https://github.com/auth0/omniauth-auth0
Blast Radius: 22.7

Affected Packages