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CRITICAL · 9.8

CVE-2019-7644

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,...

Vulnerability Description

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.

CVSS Score

9.8

CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
Auth0Auth0-Wcf-Service-Jwt< 1.0.4

Related Weaknesses (CWE)

CWE-209

References

FAQ

What is CVE-2019-7644?

CVE-2019-7644 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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,...

How severe is CVE-2019-7644?

CVE-2019-7644 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2019-7644?

Check the references section above for vendor advisories and patch information. Affected products include: Auth0 Auth0-Wcf-Service-Jwt.