CVE-2023-30542
GovernorCompatibilityBravo may trim proposal calldata
Description
### Impact 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. ### Patches This issue has been patched in v4.8.3. ### Workarounds Ensure that all proposals that pass through governance have equal length `signatures` and `calldatas` parameters.
How to fix CVE-2023-30542
To remediate CVE-2023-30542, upgrade the affected package to a fixed version below.
- —upgrade to 4.8.3 or later
- —upgrade to 4.8.3 or later
Is CVE-2023-30542 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 4.3.0, < 4.8.3
- >= 4.3.0, < 4.8.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |