GHSA-g4vp-m682-qqmp

OpenZeppelin Contracts vulnerable to Improper Escaping of Output

At a glance

Published
Updated
CVE
CVE-2023-40014
CVSS_V3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Description

### Impact OpenZeppelin Contracts is a library for secure smart contract development. Starting in version 4.0.0 and prior to version 4.9.3, contracts using `ERC2771Context` along with a custom trusted forwarder may see `_msgSender` return `address(0)` in calls that originate from the forwarder with calldata shorter than 20 bytes. This combination of circumstances does not appear to be common, in particular it is not the case for `MinimalForwarder` from OpenZeppelin Contracts, or any deployed forwarder the team is aware of, given that the signer address is appended to all calls that originate from these forwarders. ### Patches The problem has been patched in v4.9.3.

Affected packages

PackageVersions
npm · @openzeppelin/contractsintroduced 4.0.0, fixed 4.9.3
npm · @openzeppelin/contracts-upgradeableintroduced 4.0.0, fixed 4.9.3

References

Sources

SourceLicence
OSV.devCC-BY 4.0 — GitHub Advisory Database