CVE-2023-30837

Vyper storage allocator overflow

State: Published
Severity: 7.5 High
Published: May 8, 2023
Updated: Jan 29, 2025
Reserved: Apr 18, 2023

Description

Vyper is a pythonic smart contract language for the EVM. The storage allocator does not guard against allocation overflows in versions prior to 0.3.8. An attacker can overwrite the owner variable. This issue was fixed in version 0.3.8.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N	GitHub_M

Weaknesses

CWE-789 Memory Allocation with Excessive Size Value

Affected Products

Product	Versions
vypervyperlang	< 0.3.8Affected

References

https://github.com/vyperlang/vyper/security/advisories/GHSA-mgv8-gggw-mrg6
https://github.com/vyperlang/vyper/commit/0bb7203b584e771b23536ba065a6efda457161bb

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