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CVE-2023-31146

7.5 · HIGH

Vyper is a Pythonic smart contract language for the Ethereum virtual machine.

Published May 11, 2023CWE-787EPSS 1.25%

Overview

CVE-2023-31146 is a high-severity vulnerability. It was published on May 11, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Vyper is a Pythonic smart contract language for the Ethereum virtual machine. Prior to version 0.3.8, during codegen, the length word of a dynarray is written before the data, which can result in out-of-bounds array access in the case where the dynarray is on both the lhs and rhs of an assignment. The issue can cause data corruption across call frames. The expected behavior is to revert due to out-of-bounds array access. Version 0.3.8 contains a patch for this issue.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/vyperlang/vyper/commit/4f8289a81206f767df1900ac48f485d90fc87edbGitHubgithub.com/vyperlang/vyper/security/advisories/GHSA-3p37-3636-q8wvGitHubgithub.com/vyperlang/vyper/commit/4f8289a81206f767df1900ac48f485d90fc87edbGitHubgithub.com/vyperlang/vyper/security/advisories/GHSA-3p37-3636-q8wv

How CyberStrike helps

Frequently asked questions

What is CVE-2023-31146?

CVE-2023-31146 is a high-severity vulnerability. It was published on May 11, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-31146?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-31146?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-31146?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-31146 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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