CVE-2022-24788: Buffer overflow in Vyper
First published: Wed Apr 13 2022(Updated: )
### Impact Importing a function from a JSON interface which returns `bytes` generates bytecode which does not clamp bytes length, potentially resulting in a buffer overrun. ### Patches 0.3.2 (as of https://github.com/vyperlang/vyper/commit/049dbdc647b2ce838fae7c188e6bb09cf16e470b) ### Workarounds Use .vy interfaces.
Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Vyperlang Vyper | <0.3.2 | |
| pip/vyper | <0.3.2 | 0.3.2 |
| <0.3.2 |
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Reference Links
- https://github.com/vyperlang/vyper/commit/049dbdc647b2ce838fae7c188e6bb09cf16e470b
- https://github.com/vyperlang/vyper/security/advisories/GHSA-4mrx-6fxm-8jpg
- https://nvd.nist.gov/vuln/detail/CVE-2022-24788
- https://github.com/pypa/advisory-database/tree/main/vulns/vyper/PYSEC-2022-197.yaml
- https://github.com/advisories/GHSA-4mrx-6fxm-8jpg (Advisory)
Frequently Asked Questions
What is CVE-2022-24788?
CVE-2022-24788 is a vulnerability in the Vyper smart contract language for the Ethereum Virtual Machine (EVM).
How does CVE-2022-24788 impact Vyper?
CVE-2022-24788 can potentially result in a buffer overrun when importing a function from a JSON interface in Vyper versions prior to 0.3.2.
What can happen if CVE-2022-24788 is exploited?
Exploiting CVE-2022-24788 could allow an attacker to perform arbitrary code execution or cause a denial-of-service (DoS) condition.
How can I fix CVE-2022-24788?
To fix CVE-2022-24788, update Vyper to version 0.3.2 or later.
What is the severity of CVE-2022-24788?
CVE-2022-24788 has a severity rating of 9.8, which is classified as critical.
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