CVE-2023-30541: @openzeppelin/contracts OpenZeppelin Contracts TransparentUpgradeableProxy Clashing Selector Vulnerability

MODERATE
Advisory Identifier: GHSA-mx2q-35m2-x2rh
CVSS 5.3
CWE-436
Published
Advisory Summary

CVE-2023-30541 is a MODERATE (CVSS 5.3) openzeppelin contracts transparentupgradeableproxy clashing selector vulnerability (CWE-436: Interpretation Conflict) affecting @openzeppelin/contracts libraries in the npm ecosystem. The issue involves openzeppelin contracts transparentupgradeableproxy clashing selector calls may not be delegated. Remediation is available by upgrading affected packages to version 4.8.3.

CVE-2023-30541 at a Glance

CVE Identifier CVE-2023-30541
GHSA Identifier GHSA-mx2q-35m2-x2rh
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-436: Interpretation Conflict
Affected Product @openzeppelin/contracts
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:L).

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 Low (A:L)

How to Fix CVE-2023-30541

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

@openzeppelin/contracts fixed: 4.8.3
npm install @openzeppelin/contracts@4.8.3
@openzeppelin/contracts-upgradeable fixed: 4.8.3
npm install @openzeppelin/contracts-upgradeable@4.8.3
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 @openzeppelin/contracts

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2023-30541, inspect your project dependencies using npm:

npm ls @openzeppelin/contracts

Analyze the terminal output to locate any version of @openzeppelin/contracts in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.8.3), your application is affected.

Note: The npm ls @openzeppelin/contracts 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-436: Interpretation Conflict, where product a handles inputs or steps differently than product b, which causes a to perform incorrect actions based on its perception of b's state. In @openzeppelin/contracts, 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 A function in the implementation contract may be inaccessible if its selector clashes with one of the proxy's own selectors. Specifically, if the clashing function has a different signature with incompatible ABI encoding, the proxy could revert while attempting to decode the arguments from calldata. The probability of an accidental clash is negligible, but one could be caused deliberately. ### Patches The issue has been fixed in v4.8.3. ### Workarounds If a function appears to be inaccessible for this reason, it may be possible to craft the calldata such that ABI decoding does not fail at the proxy and the function is properly proxied through. ### References https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4154

CVE-2023-30541 Affected @openzeppelin/contracts Versions

2 component(s)
Fixed Versions:
4.8.3
Product / Package Ecosystem Affected Versions Fixed Version
@openzeppelin/contracts
npm
≥ 3.2.0
< 4.8.3
4.8.3
@openzeppelin/contracts-upgradeable
npm
≥ 3.2.0
< 4.8.3
4.8.3

References

Frequently Asked Questions

What is CVE-2023-30541?
CVE-2023-30541 is a security vulnerability in @openzeppelin/contracts involving OpenZeppelin Contracts TransparentUpgradeableProxy clashing selector calls may not be delegated under CWE-436: Interpretation Conflict.
Which @openzeppelin/contracts versions are affected?
Affected versions include releases prior to 4.8.3 across affected packages: @openzeppelin/contracts, @openzeppelin/contracts-upgradeable.
What version fixes CVE-2023-30541?
Upgrading to 4.8.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is @openzeppelin/contracts affected?
Yes, @openzeppelin/contracts is affected in releases prior to 4.8.3. Upgrade your dependency to 4.8.3 or later.
Is @openzeppelin/contracts-upgradeable affected?
Yes, @openzeppelin/contracts-upgradeable is affected in releases prior to 4.8.3. Upgrade your dependency to 4.8.3 or later.
What is the CVSS score of CVE-2023-30541?
CVE-2023-30541 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with CVE-2023-30541?
CVE-2023-30541 is classified under CWE-436: Interpretation Conflict (Product A handles inputs or steps differently than Product B, which causes A to perform incorrect actions based on its perception of B's state.).
How can I check npm dependencies for CVE-2023-30541?
Run the dependency tree command: 'npm ls @openzeppelin/contracts'. 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
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-mx2q-35m2-x2rh",
  "modified" : "2023-04-18T16:14:52Z",
  "published" : "2023-04-17T16:45:21Z",
  "aliases" : [ "CVE-2023-30541" ],
  "summary" : "OpenZeppelin Contracts TransparentUpgradeableProxy clashing selector calls may not be delegated",
  "details" : "### Impact\n\nA function in the implementation contract may be inaccessible if its selector clashes with one of the proxy's own selectors. Specifically, if the clashing function has a different signature with incompatible ABI encoding, the proxy could revert while attempting to decode the arguments from calldata.\n\nThe probability of an accidental clash is negligible, but one could be caused deliberately.\n\n### Patches\n\nThe issue has been fixed in v4.8.3.\n\n### Workarounds\n\nIf a function appears to be inaccessible for this reason, it may be possible to craft the calldata such that ABI decoding does not fail at the proxy and the function is properly proxied through.\n\n### References\n\nhttps://github.com/OpenZeppelin/openzeppelin-contracts/pull/4154\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@openzeppelin/contracts"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.2.0"
      }, {
        "fixed" : "4.8.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@openzeppelin/contracts-upgradeable"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.2.0"
      }, {
        "fixed" : "4.8.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-mx2q-35m2-x2rh"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-30541"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4154"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/commit/58fa0f81c4036f1a3b616fdffad2fd27e5d5ce21"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/OpenZeppelin/openzeppelin-contracts"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.8.3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-436" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-04-17T16:45:21Z",
    "nvd_published_at" : "2023-04-17T22:15:10Z"
  }
}