CVE-2023-33252: Snarkjs Double Spend Vulnerability

HIGH
Advisory Identifier: GHSA-xp5g-jhg3-3rg2
Share
CVSS 7.5
CWE-862
Published
Advisory Summary

CVE-2023-33252 is a HIGH (CVSS 7.5) double spend vulnerability (CWE-862: Missing Authorization) affecting Snarkjs libraries in the npm ecosystem. The issue involves double spend in snarkjs. Remediation is available in the latest vendor maintenance releases.

CVE-2023-33252 at a Glance

CVE Identifier CVE-2023-33252
GHSA Identifier GHSA-xp5g-jhg3-3rg2
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-862: Missing Authorization
Affected Product Snarkjs
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:H/A:N).

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 High (I:H)
Availability None (A:N)

How to Fix CVE-2023-33252

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

snarkjs fixed: Latest secure release 
npm install snarkjs@Latest secure release
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 snarkjs

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2023-33252, inspect your project dependencies using npm:

npm ls snarkjs

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

Note: The npm ls snarkjs 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-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Snarkjs, 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

iden3 snarkjs through 0.6.11 allows double spending because there is no validation that the publicSignals length is less than the field modulus.

CVE-2023-33252 Affected Snarkjs Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
snarkjs
npm/snarkjs
npm
≤ 0.6.11

References

NVD — CVE-2023-33252 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-33252
Snarkjs Source Repository REPOSITORY
https://github.com/iden3/snarkjs
Snarkjs Source Repository REPOSITORY
https://github.com/iden3/snarkjs/commits/master/src/groth16_verify.js
Snarkjs Source Repository REPOSITORY
https://github.com/iden3/snarkjs/tags

Frequently Asked Questions

What is CVE-2023-33252?
CVE-2023-33252 is a security vulnerability in Snarkjs involving Double spend in snarkjs under CWE-862: Missing Authorization.
Which Snarkjs versions are affected?
Affected versions include releases prior to current release patches across affected packages: snarkjs.
What version fixes CVE-2023-33252?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is snarkjs affected?
Yes, snarkjs is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2023-33252?
CVE-2023-33252 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:H/A:N.
What CWE is associated with CVE-2023-33252?
CVE-2023-33252 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check npm dependencies for CVE-2023-33252?
Run the dependency tree command: 'npm ls snarkjs'. 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-xp5g-jhg3-3rg2",
  "modified" : "2023-05-30T23:12:12Z",
  "published" : "2023-05-22T00:30:20Z",
  "aliases" : [ "CVE-2023-33252" ],
  "summary" : "Double spend in snarkjs",
  "details" : "iden3 snarkjs through 0.6.11 allows double spending because there is no validation that the publicSignals length is less than the field modulus.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "snarkjs"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.6.11"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-33252"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/iden3/snarkjs"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/iden3/snarkjs/commits/master/src/groth16_verify.js"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/iden3/snarkjs/tags"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-05-22T19:37:12Z",
    "nvd_published_at" : "2023-05-21T22:15:14Z"
  }
}