CVE-2021-41122: Bounds check missing for decimal args in Vyper
First published: Tue Oct 05 2021(Updated: )
### Impact The following code does not properly validate that its input is in bounds. ```python @external def foo(x: decimal) -> decimal: return x ``` ### Patches 0.3.0 / #2447 ### Workarounds Don't use decimal args
Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Vyperlang Vyper | <0.3.0 | |
| pip/vyper | <0.3.0 | 0.3.0 |
| <0.3.0 |
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Reference Links
- https://github.com/vyperlang/vyper/pull/2447
- https://github.com/vyperlang/vyper/security/advisories/GHSA-c7pr-343r-5c46
- https://nvd.nist.gov/vuln/detail/CVE-2021-41122
- https://github.com/pypa/advisory-database/tree/main/vulns/vyper/PYSEC-2021-366.yaml
- https://github.com/advisories/GHSA-c7pr-343r-5c46 (Advisory)
Frequently Asked Questions
What is CVE-2021-41122?
CVE-2021-41122 is a vulnerability in Vyper, a Pythonic Smart Contract Language for the EVM.
What is the severity of CVE-2021-41122?
CVE-2021-41122 has a severity rating of 4.3 (medium).
How does CVE-2021-41122 affect Vyper users?
CVE-2021-41122 affects Vyper users who are using versions up to 0.2.10.
How can I fix CVE-2021-41122?
To fix CVE-2021-41122, users should upgrade to Vyper version 0.3.0 or later.
Where can I find more information about CVE-2021-41122?
More information about CVE-2021-41122 can be found in the Vyper GitHub repository and the associated security advisory.
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