CVE-2023-49798 — MEDIUM (5.9)

Vulnerability Description

OpenZeppelin Contracts is a library for smart contract development. A merge issue when porting the 5.0.1 patch to the 4.9 branch caused a line duplication. In the version of `Multicall.sol` released in `@openzeppelin/[email protected]` and `@openzeppelin/[email protected]`, all subcalls are executed twice. Concretely, this exposes a user to unintentionally duplicate operations like asset transfers. The duplicated delegatecall was removed in version 4.9.5. The 4.9.4 version is marked as deprecated. Users are advised to upgrade. There are no known workarounds for this issue.

CVSS Score

5.9

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Openzeppelin	Contracts	4.9.4
Openzeppelin	Contracts Upgradeable	4.9.4

Related Weaknesses (CWE)

CWE-670

References

FAQ

What is CVE-2023-49798?

CVE-2023-49798 is a vulnerability with a CVSS score of 5.9 (MEDIUM). OpenZeppelin Contracts is a library for smart contract development. A merge issue when porting the 5.0.1 patch to the 4.9 branch caused a line duplication. In the version of `Multicall.sol` released i...

How severe is CVE-2023-49798?

CVE-2023-49798 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2023-49798?

Check the references section above for vendor advisories and patch information. Affected products include: Openzeppelin Contracts, Openzeppelin Contracts Upgradeable.