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CVE-2023-40014

MEDIUM
Published 2023-08-10T19:52:55.699Z
Actions:

Expert Analysis

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CVSS Score

V3.1
5.3
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.004
probability
of exploitation in the wild

There is a 0.4% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.577
Higher than 57.7% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
LOW
Availability
NONE

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

OpenZeppelin

openzeppelin-contracts

Affected Versions:

>= 4.0.0, < 4.9.3
openzeppelin

openzeppelin_contracts

Affected Versions:

4.0.0

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed MODERATE

OpenZeppelin Contracts vulnerable to Improper Escaping of Output

GHSA-g4vp-m682-qqmp

Advisory Details

### 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

npm @openzeppelin/contracts
ECOSYSTEM: ≥4.0.0 <4.9.3
npm @openzeppelin/contracts-upgradeable
ECOSYSTEM: ≥4.0.0 <4.9.3

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

WEB https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-g4vp-m682-qqmp
ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2023-40014
WEB https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4481
WEB https://github.com/OpenZeppelin/openzeppelin-contracts/pull/4484
WEB https://github.com/OpenZeppelin/openzeppelin-contracts/commit/9445f96223041abf2bf08daa56f8da50b674cbcd
WEB https://github.com/OpenZeppelin/openzeppelin-contracts/commit/e4435eed757d4309436b1e06608e97b6d6e2fdb5
PACKAGE https://github.com/OpenZeppelin/openzeppelin-contracts
WEB https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v4.9.3/CHANGELOG.md
WEB https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.9.3

Advisory provided by GitHub Security Advisory Database. Published: August 11, 2023, Modified: August 11, 2023

References

https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-g4vp-m682-qqmp
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/releases/tag/v4.9.3
Published: 2023-08-10T19:52:55.699Z
Last Modified: 2024-10-03T14:58:56.494Z
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