Headline
GHSA-g4vp-m682-qqmp: OpenZeppelin Contracts vulnerable to Improper Escaping of Output
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.
Package
npm @openzeppelin/contracts (npm)
Affected versions
>= 4.0.0, < 4.9.3
Patched versions
4.9.3
npm @openzeppelin/contracts-upgradeable (npm)
>= 4.0.0, < 4.9.3
4.9.3
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.
References
- GHSA-g4vp-m682-qqmp
- https://nvd.nist.gov/vuln/detail/CVE-2023-40014
- OpenZeppelin/openzeppelin-contracts#4481
- OpenZeppelin/openzeppelin-contracts#4484
- OpenZeppelin/openzeppelin-contracts@9445f96
- OpenZeppelin/openzeppelin-contracts@e4435ee
- https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.9.3/CHANGELOG.md
- https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.9.3
frangio published to OpenZeppelin/openzeppelin-contracts
Aug 10, 2023
Published to the GitHub Advisory Database
Aug 11, 2023
Reviewed
Aug 11, 2023
Related news
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. The problem has been patched in v4.9.3.