// For flags

CVE-2022-31170

OpenZeppelin Contracts's ERC165Checker may revert instead of returning false

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

OpenZeppelin Contracts is a library for smart contract development. Versions 4.0.0 until 4.7.1 are vulnerable to ERC165Checker reverting instead of returning `false`. `ERC165Checker.supportsInterface` is designed to always successfully return a boolean, and under no circumstance revert. However, an incorrect assumption about Solidity 0.8's `abi.decode` allows some cases to revert, given a target contract that doesn't implement EIP-165 as expected, specifically if it returns a value other than 0 or 1. The contracts that may be affected are those that use `ERC165Checker` to check for support for an interface and then handle the lack of support in a way other than reverting. The issue was patched in version 4.7.1.

OpenZeppelin Contracts es una biblioteca para el desarrollo de contratos inteligentes. Las versiones 4.0.0 hasta 4.7.1, son vulnerables a una reversión de ERC165Checker en lugar de devolver "false". ERC165Checker.supportsInterface está diseñado para devolver siempre un booleano con éxito, y bajo ninguna circunstancia revertir. Sin embargo, una suposición incorrecta sobre "abi.decode" de Solidity versión 0.8 permite que algunos casos sean revertidos, dado un contrato de destino que no implementa EIP-165 como es esperado, específicamente si devuelve un valor distinto de 0 o 1. Los contratos que pueden verse afectados son los que usan "ERC165Checker" para comprobar el soporte de una interfaz y luego manejar la falta de soporte de una manera distinta a la reversión. El problema fue parcheado en versión 4.7.1

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Complete
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-05-18 CVE Reserved
  • 2022-07-21 CVE Published
  • 2024-02-11 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
  • CWE-252: Unchecked Return Value
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Openzeppelin
Search vendor "Openzeppelin"
 Contracts
Search vendor "Openzeppelin" for product "Contracts"
 >= 4.0.0 < 4.7.1
Search vendor "Openzeppelin" for product "Contracts" and version " >= 4.0.0 < 4.7.1"
node.js
Affected