CVE-2023-30541
Description
OpenZeppelin Contracts is a library for secure smart contract development. 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 and could cause a reduction in availability. The issue has been fixed in version 4.8.3. As a workaround 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.
How to fix
- openzeppelin contracts4.8.3 or later
- openzeppelin contracts_upgradeable4.8.3 or later
- @openzeppelin/contracts4.8.3 or later
- @openzeppelin/contracts-upgradeable4.8.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openzeppelin contracts | 3.2.0 ≤ v < 4.8.3 | 4.8.3 |
| openzeppelin contracts_upgradeable | 3.2.0 ≤ v < 4.8.3 | 4.8.3 |
| @openzeppelin/contractsnpm | 3.2.0 ≤ v < 4.8.3 | 4.8.3 |
| @openzeppelin/contracts-upgradeablenpm | 3.2.0 ≤ v < 4.8.3 | 4.8.3 |
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Attack Surface Management
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