CVE-2023-30542

GovernorCompatibilityBravo may trim proposal calldata

Description

OpenZeppelin Contracts is a library for secure smart contract development. The proposal creation entrypoint (`propose`) in `GovernorCompatibilityBravo` allows the creation of proposals with a `signatures` array shorter than the `calldatas` array. This causes the additional elements of the latter to be ignored, and if the proposal succeeds the corresponding actions would eventually execute without any calldata. The `ProposalCreated` event correctly represents what will eventually execute, but the proposal parameters as queried through `getActions` appear to respect the original intended calldata. This issue has been patched in 4.8.3. As a workaround, ensure that all proposals that pass through governance have equal length `signatures` and `calldatas` parameters.

Category

6.8
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.18%
Vendor Advisory github.com
Affected: OpenZeppelin openzeppelin-contracts
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2023-30542?
CVE-2023-30542 has been scored as a medium severity vulnerability.
How to fix CVE-2023-30542?
To fix CVE-2023-30542, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-30542 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-30542 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-30542?
CVE-2023-30542 affects OpenZeppelin openzeppelin-contracts.
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