CVE-2020-15240
7.4 · HIGHOverview
CVE-2020-15240 is a high-severity vulnerability affecting auth0 omniauth-auth0. It was published on October 21, 2020 and has a CVSS 3.1 base score of 7.4 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from auth0. Update omniauth-auth0 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| auth0 | omniauth-auth0 | >= 2.3.0, < 2.4.1 | Affected |
References
Frequently Asked Questions
What is CVE-2020-15240?
CVE-2020-15240 is a high-severity vulnerability affecting auth0 omniauth-auth0. It was published on October 21, 2020 and has a CVSS 3.1 base score of 7.4 (HIGH).
How severe is CVE-2020-15240?
This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2020-15240?
Check the references section for vendor advisories and patches from auth0. Update omniauth-auth0 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2020-15240?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-15240 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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