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openzeppelin-solidity@4.8.1 vulnerabilities

Secure Smart Contract library for Solidity

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Direct Vulnerabilities

Known vulnerabilities in the openzeppelin-solidity package. This does not include vulnerabilities belonging to this package’s dependencies.

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Vulnerability Vulnerable Version
  • M
Improper Input Validation

openzeppelin-solidity is a Secure Smart Contract library for Solidity

Affected versions of this package are vulnerable to Improper Input Validation when the verifyMultiProof, verifyMultiProofCalldata, procesprocessMultiProof, or processMultiProofCalldat functions are in use, it is possible to construct merkle trees that allow forging a valid multiproof for an arbitrary set of leaves. A contract may be vulnerable if it uses multiproofs for verification and the merkle tree that is processed includes a node with value 0 at depth 1 (just under the root). This could happen inadvertedly for balanced trees with 3 leaves or less, if the leaves are not hashed. This could happen deliberately if a malicious tree builder includes such a node in the tree. A contract is not vulnerable if it uses single-leaf proving (verify, verifyCalldata, processProof, or processProofCalldata), or if it uses multiproofs with a known tree that has hashed leaves. Standard merkle trees produced or validated with the @openzeppelin/merkle-tree library are safe.

How to fix Improper Input Validation?

There is no fixed version for openzeppelin-solidity.

>=4.8.1
  • M
Denial of Service (DoS)

openzeppelin-solidity is a Secure Smart Contract library for Solidity

Affected versions of this package are vulnerable to Denial of Service (DoS) in the supportsERC165InterfaceUnchecked() function in ERC165Checker.sol and ERC165CheckerUpgradeable.sol, which can consume excessive resources when processing a large amount of data via an EIP-165 supportsInterface query.

How to fix Denial of Service (DoS)?

A fix was pushed into the master branch but not yet published.

>=2.0.0
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