Vulnerabilities in pkg:nuget/Auth0-WCF-Service-JWT

PACKAGE
Advisory Identifier: GHSA-qpvx-gpqm-g98j
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Advisory Summary

CVE-2019-7644 is a CRITICAL (CVSS 9.8) critical severity vulnerability that affects vulnerability (CWE-209: Generation of Error Message Containing Sensitive Information) affecting Auth0 WCF Service JWT libraries in the NuGet ecosystem. The issue involves critical severity vulnerability that affects auth0-wcf-service-jwt. Remediation is available by upgrading affected packages to version 1.0.4.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:nuget/Auth0-WCF-Service-JWT

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:nuget/Auth0-WCF-Service-JWT. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-qpvx-gpqm-g98j CVE-2019-7644 CRITICAL Critical severity vulnerability that affects Auth0-WCF-Service-JWT

CVE-2019-7644 at a Glance

CVE Identifier CVE-2019-7644
GHSA Identifier GHSA-qpvx-gpqm-g98j
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-209: Generation of Error Message Containing Sensitive Information
Affected Product Auth0 WCF Service JWT
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2019-7644

To remediate this vulnerability, upgrade all affected Auth0 WCF Service JWT dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Auth0-WCF-Service-JWT fixed: 1.0.4 
Upgrade Auth0-WCF-Service-JWT to 1.0.4
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for Auth0-WCF-Service-JWT

How to Check if You Are Affected

To determine whether your application is affected by CVE-2019-7644, inspect your project dependencies for Auth0 WCF Service JWT:

inspect dependencies for Auth0-WCF-Service-JWT

Analyze the terminal output to locate any version of Auth0 WCF Service JWT in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.4), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-209: Generation of Error Message Containing Sensitive Information, where the product generates an error message that includes sensitive information about its environment, users, or associated data. In Auth0 WCF Service JWT, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2019-7644 Affected Auth0 WCF Service JWT Versions

1 component(s)
Fixed Versions:
1.0.4
Product / Package Ecosystem Affected Versions Fixed Version
Auth0-WCF-Service-JWT
nuget/Auth0-WCF-Service-JWT
NuGet
< 1.0.4
1.0.4

References

NVD — CVE-2019-7644 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-7644
Auth0 WCF Service JWT Security Information SECURITY
https://auth0.com/docs/security/bulletins/cve-2019-7644
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-qpvx-gpqm-g98j

Frequently Asked Questions

What is CVE-2019-7644?
CVE-2019-7644 is a security vulnerability in Auth0 WCF Service JWT involving Critical severity vulnerability that affects Auth0-WCF-Service-JWT under CWE-209: Generation of Error Message Containing Sensitive Information.
Which Auth0 WCF Service JWT versions are affected?
Affected versions include releases prior to 1.0.4 across affected packages: Auth0-WCF-Service-JWT.
What version fixes CVE-2019-7644?
Upgrading to 1.0.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is Auth0-WCF-Service-JWT affected?
Yes, Auth0-WCF-Service-JWT is affected in releases prior to 1.0.4. Upgrade your dependency to 1.0.4 or later.
What is the CVSS score of CVE-2019-7644?
CVE-2019-7644 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2019-7644?
CVE-2019-7644 is classified under CWE-209: Generation of Error Message Containing Sensitive Information (The product generates an error message that includes sensitive information about its environment, users, or associated data.).
How can I check NuGet dependencies for CVE-2019-7644?
Run the dependency tree command: 'inspect dependencies for Auth0-WCF-Service-JWT'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-qpvx-gpqm-g98j",
  "modified" : "2021-09-16T20:03:33Z",
  "published" : "2019-04-18T14:28:03Z",
  "aliases" : [ "CVE-2019-7644" ],
  "summary" : "Critical severity vulnerability that affects Auth0-WCF-Service-JWT",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Auth0-WCF-Service-JWT"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.0.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-7644"
  }, {
    "type" : "WEB",
    "url" : "https://auth0.com/docs/security/bulletins/cve-2019-7644"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-qpvx-gpqm-g98j"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-209" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T21:52:29Z",
    "nvd_published_at" : null
  }
}