Critical, CVSS 9.8NuGetPublished
Critical severity vulnerability that affects Auth0-WCF-Service-JWT
CVE-2019-7644 · GHSA-qpvx-gpqm-g98j
- Affected
- NuGet auth0-wcf-service-jwt < 1.0.4
- Fixed in
- 1.0.4· Vendor fix available
- Issue
- Auth0 Auth0-WCF-Service-JWT before 1.0.4 leaks the expected JWT signature in an error message when it cannot successfully validate the JWT signature. If this error message is presented to an attacker, they can forge an arbitrary JWT token that will be accepted by the vulnerable application.
Recommended action: Upgrade to 1.0.4 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.