CVE-2024-32646
Assigner: GitHub_M
Published: 2024-04-25T17:21:59.687Z
State: PUBLISHED
title: vyper performs double eval of the slice args when buffer from adhoc locations
problemTypes: descriptions: cweId: CWE-20
description: CWE-20: Improper Input Validation
type: CWE
metrics: cvssV3_1: attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 5.3
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: LOW
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
version: 3.1
affected: vendor: vyperlang
product: vyper
versions: version: <= 0.3.10
status: affected
descriptions: value: Vyper is a pythonic Smart Contract Language for the Ethereum virtual machine. In versions 0.3.10 and prior, using the `slice` builtin can result in a double eval vulnerability when the buffer argument is either `msg.data`, `self.code` or `<address>.code` and either the `start` or `length` arguments have side-effects. It can be easily triggered only with the versions `<0.3.4` as `0.3.4` introduced the unique symbol fence. No vulnerable production contracts were found. Additionally, double evaluation of side-effects should be easily discoverable in client tests. As such, the impact is low. As of time of publication, no fixed versions are available.


source: advisory: GHSA-r56x-j438-vw5m
discovery: UNKNOWN