CVE-2023-49798: Duplicated execution of subcalls in OpenZeppelin Contracts
First published: Fri Dec 08 2023(Updated: )
### Context Merge conflict resolution issue when porting the v5.0.1 `Multicall` update to the v4.9 branch caused a duplicated line. ### Impact Versions using `Multicall` from `@openzeppelin/contracts@4.9.4` and `@openzeppelin/contracts-upgradeable@4.9.4` will execute each subcall twice. Concretely, this exposes a user to unintentionally duplicate operations like asset transfers. ### Patches The duplicated `delegatecall` was removed in 4.9.5. The 4.9.4 version is marked as deprecated.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| npm/@openzeppelin/contracts-upgradeable | =4.9.4 | 4.9.5 |
| npm/@openzeppelin/contracts | =4.9.4 | 4.9.5 |
| OpenZeppelin Contracts | =4.9.4 | |
| OpenZeppelin Contracts Upgradeable | =4.9.4 |
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Reference Links
- https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-699g-q6qh-q4v8
- https://nvd.nist.gov/vuln/detail/CVE-2023-49798
- https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/commit/31f9fb9d171f60b2271b2b9c6f62d43302bf9489
- https://github.com/OpenZeppelin/openzeppelin-contracts/commit/88ac712e06832bce73b41e8166cded2729e25205
- https://github.com/advisories/GHSA-699g-q6qh-q4v8 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2023-49798?
CVE-2023-49798 is considered to have a high severity due to the potential for unexpected behavior in contract execution.
How do I fix CVE-2023-49798?
To fix CVE-2023-49798, upgrade to version 4.9.5 of the affected packages @openzeppelin/contracts and @openzeppelin/contracts-upgradeable.
Which versions are affected by CVE-2023-49798?
CVE-2023-49798 affects version 4.9.4 of both @openzeppelin/contracts and @openzeppelin/contracts-upgradeable.
What is the impact of CVE-2023-49798?
The impact of CVE-2023-49798 includes the potential for executing unintended subcalls in contracts using Multicall.
How can I verify if I am affected by CVE-2023-49798?
You can verify if you are affected by checking the version of @openzeppelin/contracts and @openzeppelin/contracts-upgradeable to see if they are at 4.9.4.
- collector/github-advisory-latest
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