openzeppelin/openzeppelin-contracts · Security
OpenZeppelin Contracts vulnerable to Improper Escaping of Output
- GHSA ID
- GHSA-g4vp-m682-qqmp
- CVE ID
- CVE-2023-40014
- Severity
- medium
- Published
- Updated
- CVSS
- 5.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CVSS v3
- 5.3 · 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.
CWEs
- CWE-116 · Improper Encoding or Escaping of Output
References
- https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-g4vp-m682-qqmp ↗
- https://nvd.nist.gov/vuln/detail/CVE-2023-40014 ↗
- https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4481 ↗
- https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4484 ↗
- https://github.com/OpenZeppelin/openzeppelin-contracts/commit/9445f96223041abf2bf08daa56f8da50b674cbcd ↗
- https://github.com/OpenZeppelin/openzeppelin-contracts/commit/e4435eed757d4309436b1e06608e97b6d6e2fdb5 ↗
- https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.9.3/CHANGELOG.md ↗
- https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.9.3 ↗
- https://github.com/advisories/GHSA-g4vp-m682-qqmp ↗