CVE-2023-31146

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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/vyperlang/vyper/commit/4f8289a81206f767df1900ac48f485d90fc87edb	Patch
https://github.com/vyperlang/vyper/security/advisories/GHSA-3p37-3636-q8wv	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2023-05-11 21:15

Updated : 2023-08-02 16:22

NVD link : CVE-2023-31146

Mitre link : CVE-2023-31146

CVE.ORG link : CVE-2023-31146

JSON object : View

Products Affected

vyperlang

vyper

CWE

CWE-787

Out-of-bounds Write

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