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CVE-2019-7644

Published

5 years ago

Last Modified

3 years ago

CVSSv2.0 Severity

High

CVSSv3.1 Severity

Critical

Impact Analysis

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..

CVSSv2.0 Score

Severity: High
Base Score: 7.5/10
Exploit Score: 10/10
Access Vector: Network
Access Complexity: Low
Authentication Required: None
Impact Score: 6.4/10
Confidentiality Impact: Partial
Availability Impact: Partial
Integrity Impact: Partial

CVSSv3.1 Score

Severity: Critical
Base Score: 9.8/10
Exploit Score: 3.9/10
Access Vector: Network
Access Complexity: Low
Privileges Required: None
Impact Score: 5.9/10
Confidentiality Impact: High
Availability Impact: High
Integrity Impact: High
Scope: Unchanged
User Interaction: None

Products Affected

CPE	Affected	Vulnerable	Excluding	Edit
cpe:2.3:a:auth0:auth0-wcf-service-jwt::::::::	Yes	-	1.0.4

References

https://auth0.com/docs/security/bulletins/cve-2019-7644