CVE-2019-10781: Schema inspector Validation Bypass Vulnerability

CRITICAL
Advisory Identifier: GHSA-r24h-634p-m72x
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CVSS 9.8
CWE-668
Published
Advisory Summary

CVE-2019-10781 is a CRITICAL (CVSS 9.8) validation bypass vulnerability (CWE-668: Exposure of Resource to Wrong Sphere) affecting Schema inspector libraries in the npm ecosystem. The issue involves validation bypass in schema-inspector. Remediation is available by upgrading affected packages to version 1.6.9.

CVE-2019-10781 at a Glance

CVE Identifier CVE-2019-10781
GHSA Identifier GHSA-r24h-634p-m72x
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-668: Exposure of Resource to Wrong Sphere
Affected Product Schema inspector
Package Ecosystem npm
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:3.1/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-2019-10781

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

schema-inspector fixed: 1.6.9 
npm install schema-inspector@1.6.9
Verify Direct and Transitive Dependencies

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

npm ls schema-inspector

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2019-10781, inspect your project dependencies using npm:

npm ls schema-inspector

Analyze the terminal output to locate any version of Schema inspector in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.6.9), your application is affected.

Note: The npm ls schema-inspector command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-668: Exposure of Resource to Wrong Sphere, where the product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource. In Schema inspector, 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

In schema-inspector before 1.6.9, a maliciously crafted JavaScript object can bypass the `sanitize()` and the `validate()` function used within schema-inspector.

CVE-2019-10781 Affected Schema inspector Versions

1 component(s)
Fixed Versions:
1.6.9
Product / Package Ecosystem Affected Versions Fixed Version
schema-inspector
npm/schema-inspector
npm
< 1.6.9
1.6.9

References

NVD — CVE-2019-10781 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-10781
Security Fix Commit FIX COMMIT
https://github.com/Atinux/schema-inspector/commit/345a7b2eed11bb6128421150d65f4f83fdbb737d
Schema inspector Source Repository REPOSITORY
https://github.com/Atinux/schema-inspector
snyk.io/vuln/snyk-js-schema... WEB
https://snyk.io/vuln/SNYK-JS-SCHEMAINSPECTOR-536970

Frequently Asked Questions

What is CVE-2019-10781?
CVE-2019-10781 is a security vulnerability in Schema inspector involving Validation Bypass in schema-inspector under CWE-668: Exposure of Resource to Wrong Sphere.
Which Schema inspector versions are affected?
Affected versions include releases prior to 1.6.9 across affected packages: schema-inspector.
What version fixes CVE-2019-10781?
Upgrading to 1.6.9 (or the latest patched release for your respective branch) resolves the vulnerability.
Is schema-inspector affected?
Yes, schema-inspector is affected in releases prior to 1.6.9. Upgrade your dependency to 1.6.9 or later.
What is the CVSS score of CVE-2019-10781?
CVE-2019-10781 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2019-10781?
CVE-2019-10781 is classified under CWE-668: Exposure of Resource to Wrong Sphere (The product exposes a resource to the wrong control sphere, providing unintended actors with inappropriate access to the resource.).
How can I check npm dependencies for CVE-2019-10781?
Run the dependency tree command: 'npm ls schema-inspector'. 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-r24h-634p-m72x",
  "modified" : "2021-08-30T13:35:23Z",
  "published" : "2020-06-10T20:02:47Z",
  "aliases" : [ "CVE-2019-10781" ],
  "summary" : "Validation Bypass in schema-inspector",
  "details" : "In schema-inspector before 1.6.9, a maliciously crafted JavaScript object can bypass the `sanitize()` and the `validate()` function used within schema-inspector.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "schema-inspector"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.6.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-10781"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Atinux/schema-inspector/commit/345a7b2eed11bb6128421150d65f4f83fdbb737d"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Atinux/schema-inspector"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-SCHEMAINSPECTOR-536970"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-668" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-10T18:15:24Z",
    "nvd_published_at" : null
  }
}