CVE-2024-32647

vyper performs double eval of raw_args in create_from_blueprint

State
Published
Severity
5.3 Medium
Published
Apr 25, 2024
Updated
Aug 2, 2024
Reserved
Apr 16, 2024

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.15.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NGitHub_M

Weaknesses

  • CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')

Affected Products

ProductVersions
vypervyperlang
  • <= 0.3.10Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.