CVE-2022-31172 OpenZeppelin Contracts's SignatureChecker may revert on invalid EIP-1271 signers

OpenZeppelin Contracts is a library for smart contract development. Versions 4.1.0 until 4.7.1 are vulnerable to the SignatureChecker reverting. SignatureChecker.isValidSignatureNow is not expected to revert. However, an incorrect assumption about Solidity 0.8's abi.decode allows some cases to...

CVE-2022-31172

OpenZeppelin Contracts (library) is affected by CVE-2022-31172 in versions 4.1.0–4.7.1, where SignatureChecker.isValidSignatureNow may revert due to an incorrect assumption about Solidity 0.8 ABI decoding, especially when a target contract does not implement EIP-1271 as expected. The vulnerabilit...

CVE-2021-41264

OpenZeppelin Contracts is a library for smart contract development. In affected versions upgradeable contracts using UUPSUpgradeable may be vulnerable to an attack affecting uninitialized implementation contracts. A fix is included in version 4.3.2 of @openzeppelin/contracts and...

CVE-2021-41264

OpenZeppelin CVE-2021-41264 affects upgradeable contracts using UUPSUpgradeable due to uninitialized implementation contracts. The vulnerability is addressed in version 4.3.2 of @openzeppelin/contracts and @openzeppelin/contracts-upgradeable. If upgrading is not possible, a mitigation is to initi...

Code injection

OpenZepplin is a library for smart contract development. In affected versions a vulnerability in TimelockController allowed an actor with the executor role to escalate privileges. Further details about the vulnerability will be disclosed at a later date. As a workaround revoke the executor role...