PYSEC-2023-307
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/vyper/PYSEC-2023-307.yaml
- JSON Data
- https://api.test.osv.dev/v1/vulns/PYSEC-2023-307
- Aliases
- Published
- 2023-12-13T20:15:00Z
- Modified
- 2024-11-21T14:59:39.815170Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine (EVM). Contracts containing large arrays might underallocate the number of slots they need by 1. Prior to v0.3.8, the calculation to determine how many slots a storage variable needed used
math.ceil(type_.size_in_bytes / 32). The intermediate floating point step can produce a rounding error if there are enough bits set in the IEEE-754 mantissa. Roughly speaking, iftype_.size_in_bytesis large (> 2**46), and slightly less than a power of 2, the calculation can overestimate how many slots are needed by 1. Iftype_.size_in_bytesis slightly more than a power of 2, the calculation can underestimate how many slots are needed by 1. This issue is patched in version 0.3.8. - References
Affected packages
PyPI / vyper
Package
- Name
- vyper
- View open source insights on deps.dev
- Purl
- pkg:pypi/vyper
Affected ranges
- Type
- GIT
- Repo
- https://github.com/vyperlang/vyper
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed0.3.8