# CVE-2024-45304: Business logic in cairo-contracts

> A logic flaw in OpenZeppelin Cairo contracts allows a pending owner to claim ownership after the original owner renounces it, enabling unauthorized control.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 Aug 2024
- **Updated:** 3 Sep 2024
- **Also known as:** GHSA-w2px-25pm-2cf9

## What is CVE-2024-45304?

CVE-2024-45304 is a medium-severity vulnerability in OpenZeppelin cairo-contracts, published on 30 Aug 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Cairo-Contracts are OpenZeppelin Contracts written in Cairo for Starknet, a decentralized ZK Rollup. This vulnerability can lead to unauthorized ownership transfer, contrary to the original owner's intention of leaving the contract without an owner. It introduces a security risk where an unintended party (pending owner) can gain control of the contract after the original owner has renounced ownership. This could also be used by a malicious owner to simulate leaving a contract without an owner, to later regain ownership by previously having proposed himself as a pending owner. This issue has been addressed in release version 0.16.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.

Weakness: CWE-670 (Always-Incorrect Control Flow Implementation)

## Which versions are affected by CVE-2024-45304?

It affects 1 product.


Products: Openzeppelin Contracts.

## How do I fix CVE-2024-45304?

No fix has been published for CVE-2024-45304 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-45304 being exploited?

There is no known exploitation of CVE-2024-45304 in the wild and no public exploit code.

## Other vulnerabilities in OpenZeppelin cairo-contracts

- [CVE-2021-39167](https://insights.sbomify.com/CVE-2021-39167/): TimelockController vulnerability in OpenZeppelin Contracts (critical 10.0)
- [CVE-2021-39168](https://insights.sbomify.com/CVE-2021-39168/): TimelockController vulnerability in OpenZeppelin Contracts (critical 10.0)
- [CVE-2021-41264](https://insights.sbomify.com/CVE-2021-41264/): UUPSUpgradeable vulnerability in OpenZeppelin Contracts (critical 9.8)
- [CVE-2022-35961](https://insights.sbomify.com/CVE-2022-35961/): ECDSA signature malleability in OpenZeppelin Contracts (high 7.9)
- [CVE-2022-31198](https://insights.sbomify.com/CVE-2022-31198/): GovernorVotesQuorumFraction updates to quorum may affect past defeated proposals in @openzeppelin/contracts (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-45304 and fix it if it is affected.

What it is: CVE-2024-45304 is a medium-severity vulnerability in OpenZeppelin cairo-contracts, published on 30 Aug 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-45304 in the wild and no public exploit code.

Affected product: OpenZeppelin cairo-contracts. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-45304/ (Markdown: https://insights.sbomify.com/CVE-2024-45304/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-45304
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-45304
- OSV: https://osv.dev/vulnerability/CVE-2024-45304

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-45304/
Summaries are generated and may contain mistakes; the official description above is the record.