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CVE-2019-7644 — Vulnerability in Auth0-WCF-Service-JWT — CVE Details

CRITICAL

Critical severity vulnerability that affects Auth0-WCF-Service-JWT

Published April 18, 2019Updated November 8, 2023Source: osv

Summary

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.

Advisory Timeline

  • First published April 18, 2019 (2734 days ago).
  • Last revised November 8, 2023 — 1665 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

NuGet
Update Auth0-WCF-Service-JWT to 1.0.4 or later
dotnet add package Auth0-WCF-Service-JWT --version 1.0.4

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: nuget (1).

PackageEcosystemAffectedFixed In
Auth0-WCF-Service-JWT
nuget
0.9.4, 0.9.5, 0.9.6, 1.0.0 (+3 more)1.0.4

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2019-7644?
Critical severity vulnerability that affects Auth0-WCF-Service-JWT This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2019-7644?
CVE-2019-7644 affects Auth0-WCF-Service-JWT. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2019-7644 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-qpvx-gpqm-g98j

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