CVE-2021-23507: Object path set Prototype Pollution Vulnerability

HIGH
Advisory Identifier: GHSA-h6pr-c536-6rjg
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CVSS 7.5
CWE-1321
Published
Advisory Summary

CVE-2021-23507 is a HIGH (CVSS 7.5) prototype pollution vulnerability (CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')) affecting Object path set libraries in the npm ecosystem. The issue involves prototype pollution in object-path-set. Remediation is available by upgrading affected packages to version 1.0.2.

CVE-2021-23507 at a Glance

CVE Identifier CVE-2021-23507
GHSA Identifier GHSA-h6pr-c536-6rjg
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Product Object path set
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:N/I:N/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 None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2021-23507

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

object-path-set fixed: 1.0.2 
npm install object-path-set@1.0.2
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 object-path-set

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2021-23507, inspect your project dependencies using npm:

npm ls object-path-set

Analyze the terminal output to locate any version of Object path set in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.2), your application is affected.

Note: The npm ls object-path-set 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-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'), where the product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. In Object path set, 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

The package object-path-set before 1.0.2 are vulnerable to Prototype Pollution via the setPath method, as it allows an attacker to merge object prototypes into it. *Note:* This vulnerability derives from an incomplete fix in https://security.snyk.io/vuln/SNYK-JS-OBJECTPATHSET-607908

CVE-2021-23507 Affected Object path set Versions

1 component(s)
Fixed Versions:
1.0.2
Product / Package Ecosystem Affected Versions Fixed Version
object-path-set
npm/object-path-set
npm
< 1.0.2
1.0.2

References

NVD — CVE-2021-23507 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-23507
Security Fix Commit FIX COMMIT
https://github.com/skratchdot/object-path-set/commit/2d67a714159c4099589b6661fa84e6d2adc31761
Object path set Source Repository REPOSITORY
https://github.com/skratchdot/object-path-set
Object path set Source Repository REPOSITORY
https://github.com/skratchdot/object-path-set/blob/577f5299fed15bb9edd11c940ff3cf0b9f4748d5/index.js%23L8
snyk.io/blog/remediate-java... WEB
https://snyk.io/blog/remediate-javascript-type-confusion-bypassed-input-validation
snyk.io/vuln/snyk-js-object... WEB
https://snyk.io/vuln/SNYK-JS-OBJECTPATHSET-2388576

Frequently Asked Questions

What is CVE-2021-23507?
CVE-2021-23507 is a security vulnerability in Object path set involving Prototype Pollution in object-path-set under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
Which Object path set versions are affected?
Affected versions include releases prior to 1.0.2 across affected packages: object-path-set.
What version fixes CVE-2021-23507?
Upgrading to 1.0.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is object-path-set affected?
Yes, object-path-set is affected in releases prior to 1.0.2. Upgrade your dependency to 1.0.2 or later.
What is the CVSS score of CVE-2021-23507?
CVE-2021-23507 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2021-23507?
CVE-2021-23507 is classified under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') (The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.).
How can I check npm dependencies for CVE-2021-23507?
Run the dependency tree command: 'npm ls object-path-set'. 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-h6pr-c536-6rjg",
  "modified" : "2022-02-11T16:16:47Z",
  "published" : "2022-02-05T00:00:31Z",
  "aliases" : [ "CVE-2021-23507" ],
  "summary" : "Prototype Pollution in object-path-set",
  "details" : "The package object-path-set before 1.0.2 are vulnerable to Prototype Pollution via the setPath method, as it allows an attacker to merge object prototypes into it. *Note:* This vulnerability derives from an incomplete fix in https://security.snyk.io/vuln/SNYK-JS-OBJECTPATHSET-607908",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "object-path-set"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.0.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-23507"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/skratchdot/object-path-set/commit/2d67a714159c4099589b6661fa84e6d2adc31761"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/skratchdot/object-path-set"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/skratchdot/object-path-set/blob/577f5299fed15bb9edd11c940ff3cf0b9f4748d5/index.js%23L8"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/blog/remediate-javascript-type-confusion-bypassed-input-validation"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-OBJECTPATHSET-2388576"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1321" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-02-07T19:07:16Z",
    "nvd_published_at" : "2022-02-04T20:15:00Z"
  }
}