CVE-2022-22143: Convict Prototype Pollution Vulnerability

HIGH
Advisory Identifier: GHSA-x2w5-725j-gf2g
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CVSS 8.4
CWE-1321
Published
Advisory Summary

CVE-2022-22143 is a HIGH (CVSS 8.4) prototype pollution vulnerability (CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')) affecting Convict libraries in the npm ecosystem. The issue involves prototype pollution in convict. Remediation is available by upgrading affected packages to version 6.2.3.

CVE-2022-22143 at a Glance

CVE Identifier CVE-2022-22143
GHSA Identifier GHSA-x2w5-725j-gf2g
Severity HIGH
CVSS v3.1 Base Score 8.4
CWE Classification CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Affected Product Convict
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 8.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Local (AV:L)
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-2022-22143

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

convict fixed: 6.2.3 
npm install convict@6.2.3
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 convict

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2022-22143, inspect your project dependencies using npm:

npm ls convict

Analyze the terminal output to locate any version of Convict in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.2.3), your application is affected.

Note: The npm ls convict 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 Convict, 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

### Impact * An attacker can inject attributes that are used in other components * An attacker can override existing attributes with ones that have incompatible type, which may lead to a crash. The main use case of Convict is for handling server-side configurations written by the admins owning the servers, and not random users. So it's unlikely that an admin would deliberately sabotage their own server. Still a situation can happen where an admin not knowledgeable about JavaScript could be tricked by an attacker into writing the malicious JavaScript code into some config files. ### Patches The problem is patched in `convict@6.2.3`. Users should upgrade to `convict@6.2.3`. ### Workarounds No way for users to fix or remediate the vulnerability without upgrading ### References * https://www.huntr.dev/bounties/1-npm-convict/ * #384 * 3b86be087d8f14681a9c889d45da7fe3ad9cd880 * 1ea0ab19c5208f66509e1c43b0d0f21c1fd29b75 ### For more information If you have any questions or comments about this advisory: add your question as a comment in #384

CVE-2022-22143 Affected Convict Versions

1 component(s)
Fixed Versions:
6.2.3
Product / Package Ecosystem Affected Versions Fixed Version
convict
npm/convict
npm
< 6.2.3
6.2.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/mozilla/node-convict/security/advisories/GHSA-x2w5-725j-gf2g
NVD — CVE-2022-22143 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-22143
Convict Source Repository REPOSITORY
https://github.com/mozilla/node-convict/pull/384
Security Fix Commit FIX COMMIT
https://github.com/mozilla/node-convict/commit/3b86be087d8f14681a9c889d45da7fe3ad9cd880
Convict Source Repository REPOSITORY
https://github.com/mozilla/node-convict
Convict Source Repository REPOSITORY
https://github.com/mozilla/node-convict/blob/5eb1314f85346760a3c31cb14510f2f0af11d0d3/packages/convict/src/main.js%23L569
Convict Release RELEASE
https://github.com/mozilla/node-convict/releases/tag/v6.2.2
snyk.io/vuln/snyk-js-convic... WEB
https://snyk.io/vuln/SNYK-JS-CONVICT-2340604
www.huntr.dev/bounties/1-npm-conv... WEB
https://www.huntr.dev/bounties/1-npm-convict

Frequently Asked Questions

What is CVE-2022-22143?
CVE-2022-22143 is a security vulnerability in Convict involving Prototype Pollution in convict under CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution').
Which Convict versions are affected?
Affected versions include releases prior to 6.2.3 across affected packages: convict.
What version fixes CVE-2022-22143?
Upgrading to 6.2.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is convict affected?
Yes, convict is affected in releases prior to 6.2.3. Upgrade your dependency to 6.2.3 or later.
What is the CVSS score of CVE-2022-22143?
CVE-2022-22143 has a CVSS v3.1 base score of 8.4 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2022-22143?
CVE-2022-22143 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-2022-22143?
Run the dependency tree command: 'npm ls convict'. 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-x2w5-725j-gf2g",
  "modified" : "2022-05-26T19:43:23Z",
  "published" : "2022-04-20T16:21:03Z",
  "aliases" : [ "CVE-2022-22143" ],
  "summary" : "Prototype Pollution in convict",
  "details" : "### Impact\n\n* An attacker can inject attributes that are used in other components\n* An attacker can override existing attributes with ones that have incompatible type, which may lead to a crash.\n\nThe main use case of Convict is for handling server-side configurations written by the admins owning the servers, and not random users. So it's unlikely that an admin would deliberately sabotage their own server. Still a situation can happen where an admin not knowledgeable about JavaScript could be tricked by an attacker into writing the malicious JavaScript code into some config files.\n\n### Patches\n\nThe problem is patched in `convict@6.2.3`. Users should upgrade to `convict@6.2.3`.\n\n### Workarounds\n\nNo way for users to fix or remediate the vulnerability without upgrading\n\n### References\n\n* https://www.huntr.dev/bounties/1-npm-convict/\n* #384\n* 3b86be087d8f14681a9c889d45da7fe3ad9cd880\n* 1ea0ab19c5208f66509e1c43b0d0f21c1fd29b75\n\n### For more information\n\nIf you have any questions or comments about this advisory: \nadd your question as a comment in #384 \n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "convict"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "6.2.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/mozilla/node-convict/security/advisories/GHSA-x2w5-725j-gf2g"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-22143"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mozilla/node-convict/pull/384"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mozilla/node-convict/commit/3b86be087d8f14681a9c889d45da7fe3ad9cd880"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mozilla/node-convict"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mozilla/node-convict/blob/5eb1314f85346760a3c31cb14510f2f0af11d0d3/packages/convict/src/main.js%23L569"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mozilla/node-convict/releases/tag/v6.2.2"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JS-CONVICT-2340604"
  }, {
    "type" : "WEB",
    "url" : "https://www.huntr.dev/bounties/1-npm-convict"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-1321" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-04-20T16:21:03Z",
    "nvd_published_at" : "2022-05-01T16:15:00Z"
  }
}