CVE-2023-31146 (GCVE-0-2023-31146)
Vulnerability from cvelistv5
Published
2023-05-11 20:51
Modified
2025-01-24 16:02
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
Vyper is a Pythonic smart contract language for the Ethereum virtual machine. Prior to version 0.3.8, during codegen, the length word of a dynarray is written before the data, which can result in out-of-bounds array access in the case where the dynarray is on both the lhs and rhs of an assignment. The issue can cause data corruption across call frames. The expected behavior is to revert due to out-of-bounds array access. Version 0.3.8 contains a patch for this issue.
References
security-advisories@github.comhttps://github.com/vyperlang/vyper/commit/4f8289a81206f767df1900ac48f485d90fc87edbPatch
security-advisories@github.comhttps://github.com/vyperlang/vyper/security/advisories/GHSA-3p37-3636-q8wvExploit, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/vyperlang/vyper/commit/4f8289a81206f767df1900ac48f485d90fc87edbPatch
af854a3a-2127-422b-91ae-364da2661108https://github.com/vyperlang/vyper/security/advisories/GHSA-3p37-3636-q8wvExploit, Vendor Advisory
Impacted products
Vendor Product Version
vyperlang vyper Version: < 0.3.8
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