Vulnerability Description
Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the `create_from_blueprint` builtin can result in a double eval vulnerability when `raw_args=True` and the `args` argument has side-effects. It can be seen that the `_build_create_IR` function of the `create_from_blueprint` builtin doesn't cache the mentioned `args` argument to the stack. As such, it can be evaluated multiple times (instead of retrieving the value from the stack). No vulnerable production contracts were found. Additionally, double evaluation of side-effects should be easily discoverable in client tests. As such, the impact is low. As of time of publication, no fixed versions exist.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vyperlang | Vyper | < 0.4.0 |
Related Weaknesses (CWE)
References
- https://github.com/vyperlang/vyper/blob/cedf7087e68e67c7bfbd47ae95dcb16b81ad2e02Product
- https://github.com/vyperlang/vyper/security/advisories/GHSA-3whq-64q2-qfj6Vendor Advisory
- https://github.com/vyperlang/vyper/blob/cedf7087e68e67c7bfbd47ae95dcb16b81ad2e02Product
- https://github.com/vyperlang/vyper/security/advisories/GHSA-3whq-64q2-qfj6Vendor Advisory
FAQ
What is CVE-2024-32647?
CVE-2024-32647 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the `create_from_blueprint` builtin can result in a double eval vulnerability when `ra...
How severe is CVE-2024-32647?
CVE-2024-32647 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-32647?
Check the references section above for vendor advisories and patch information. Affected products include: Vyperlang Vyper.