Products
Vyper
- 0.3.10 and prior
Source
security-advisories@github.com
Tags
CVE-2024-32647 details
Last Modified : April 25, 2024, 6:15 p.m.
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
| 1 | 2 | 3 | 4 | 5.3 | 6 | 7 | 8 | 9 | 10 |
|---|
Weakness
| Weakness | Name | Description |
|---|
CVSS Data
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Base Score
5.3
Exploitability Score
Impact Score
Base Severity
MEDIUM
Vector String : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
References
| URL | Source |
|---|---|
| https://github.com/vyperlang/vyper/blob/cedf7087e68e67c7bfbd47ae95dcb16b81ad2e02/vyper/builtins/functions.py#L1847 | security-advisories@github.com |
| https://github.com/vyperlang/vyper/security/advisories/GHSA-3whq-64q2-qfj6 | security-advisories@github.com |