CVE-2021-4307: Baobab Baobab Vulnerable To Prototype Pollution Vulnerability

CRITICAL
Advisory Identifier: GHSA-wvr2-q86m-6whp
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CVSS 9.8
CWE-1321
Published
Advisory Summary

CVE-2021-4307 is a CRITICAL (CVSS 9.8) baobab vulnerable to prototype pollution vulnerability (CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')) affecting Baobab libraries in the npm ecosystem. The issue involves baobab vulnerable to prototype pollution. Remediation is available by upgrading affected packages to version 2.6.1.

CVE-2021-4307 at a Glance

CVE Identifier CVE-2021-4307
GHSA Identifier GHSA-wvr2-q86m-6whp
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Product Baobab
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-2021-4307

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

baobab fixed: 2.6.1 
npm install baobab@2.6.1
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 baobab

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2021-4307, inspect your project dependencies using npm:

npm ls baobab

Analyze the terminal output to locate any version of Baobab in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.6.1), your application is affected.

Note: The npm ls baobab 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 Baobab, 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

A vulnerability was found in Yomguithereal Baobab up to 2.6.0. It has been declared as critical. Affected by this vulnerability is an unknown functionality. The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). The attack can be launched remotely. Upgrading to version 2.6.1 is able to address this issue. The name of the patch is c56639532a923d9a1600fb863ec7551b188b5d19. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-217627.

CVE-2021-4307 Affected Baobab Versions

1 component(s)
Fixed Versions:
2.6.1
Product / Package Ecosystem Affected Versions Fixed Version
baobab
npm/baobab
npm
< 2.6.1
2.6.1

References

NVD — CVE-2021-4307 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-4307
Baobab Source Repository REPOSITORY
https://github.com/Yomguithereal/baobab/pull/511
Security Fix Commit FIX COMMIT
https://github.com/Yomguithereal/baobab/commit/c56639532a923d9a1600fb863ec7551b188b5d19
Baobab Source Repository REPOSITORY
https://github.com/Yomguithereal/baobab
Baobab Release RELEASE
https://github.com/Yomguithereal/baobab/releases/tag/2.6.1
vuldb.com/ WEB
https://vuldb.com/?ctiid.217627
vuldb.com/ WEB
https://vuldb.com/?id.217627

Frequently Asked Questions

What is CVE-2021-4307?
CVE-2021-4307 is a security vulnerability in Baobab involving Baobab vulnerable to Prototype Pollution under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
Which Baobab versions are affected?
Affected versions include releases prior to 2.6.1 across affected packages: baobab.
What version fixes CVE-2021-4307?
Upgrading to 2.6.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is baobab affected?
Yes, baobab is affected in releases prior to 2.6.1. Upgrade your dependency to 2.6.1 or later.
What is the CVSS score of CVE-2021-4307?
CVE-2021-4307 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-2021-4307?
CVE-2021-4307 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-2021-4307?
Run the dependency tree command: 'npm ls baobab'. 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-wvr2-q86m-6whp",
  "modified" : "2023-01-12T22:47:31Z",
  "published" : "2023-01-07T21:30:38Z",
  "aliases" : [ "CVE-2021-4307" ],
  "summary" : "Baobab vulnerable to Prototype Pollution",
  "details" : "A vulnerability was found in Yomguithereal Baobab up to 2.6.0. It has been declared as critical. Affected by this vulnerability is an unknown functionality. The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). The attack can be launched remotely. Upgrading to version 2.6.1 is able to address this issue. The name of the patch is c56639532a923d9a1600fb863ec7551b188b5d19. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-217627.",
  "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" : "baobab"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.6.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-4307"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Yomguithereal/baobab/pull/511"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Yomguithereal/baobab/commit/c56639532a923d9a1600fb863ec7551b188b5d19"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Yomguithereal/baobab"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Yomguithereal/baobab/releases/tag/2.6.1"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?ctiid.217627"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?id.217627"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1321" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-01-09T21:54:36Z",
    "nvd_published_at" : "2023-01-07T20:15:00Z"
  }
}