CVE-2023-46247

CVSS V2 None CVSS V3 None
Description
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, if `type_.size_in_bytes` is large (> 2**46), and slightly less than a power of 2, the calculation can overestimate how many slots are needed by 1. If `type_.size_in_bytes` is 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.
Overview
  • CVE ID
  • CVE-2023-46247
  • Assigner
  • GitHub_M
  • Vulnerability Status
  • PUBLISHED
  • Published Version
  • 2023-12-13T19:39:22.626Z
  • Last Modified Date
  • 2023-12-13T19:39:22.626Z
Weakness Enumerations
CWE URL
CWE-193 http://cwe.mitre.org/data/definitions/193.html
CWE-682 http://cwe.mitre.org/data/definitions/682.html
References
Reference URL Reference Tags
https://github.com/vyperlang/vyper/security/advisories/GHSA-6m97-7527-mh74 x_refsource_CONFIRM
https://github.com/vyperlang/vyper/commit/0bb7203b584e771b23536ba065a6efda457161bb x_refsource_MISC
https://github.com/vyperlang/vyper/blob/6020b8bbf66b062d299d87bc7e4eddc4c9d1c157/vyper/semantics/validation/data_positions.py#L197 x_refsource_MISC
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2023-46247
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-46247
History
Created Old Value New Value Data Type Notes
2024-06-24 22:19:16 Added to TrackCVE