CVE-2020-15222
8.1 · HIGHOverview
CVE-2020-15222 is a high-severity vulnerability affecting ory fosite. It was published on September 24, 2020 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
In ORY Fosite (the security first OAuth2 & OpenID Connect framework for Go) before version 0.31.0, when using "private_key_jwt" authentication the uniqueness of the `jti` value is not checked. When using client authentication method "private_key_jwt", OpenId specification says the following about assertion `jti`: "A unique identifier for the token, which can be used to prevent reuse of the token. These tokens MUST only be used once, unless conditions for reuse were negotiated between the parties". Hydra does not seem to check the uniqueness of this `jti` value. This problem is fixed in version 0.31.0.
Remediation
Check the references section for vendor advisories and patches from ory. Update fosite 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 |
|---|---|---|---|
| ory | fosite | >= 0, < 0.31.0 | Affected |
References
Frequently Asked Questions
What is CVE-2020-15222?
CVE-2020-15222 is a high-severity vulnerability affecting ory fosite. It was published on September 24, 2020 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2020-15222?
This vulnerability has a CVSS 3.1 base score of 8.1, 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-2020-15222?
Check the references section for vendor advisories and patches from ory. Update fosite 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-2020-15222?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-15222 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.
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