CVE-2023-32058

2023-05-1121:15:10

CWE-190

[email protected]

web.nvd.nist.gov

vyper

python

ethereum

smart contract

cve-2023-32058

security vulnerability

type mismatch

overflow check

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

0.001 Low

EPSS

Percentile

42.9%

JSON

Vyper is a Pythonic smart contract language for the Ethereum virtual machine. Prior to version 0.3.8, due to missing overflow check for loop variables, by assigning the iterator of a loop to a variable, it is possible to overflow the type of the latter. The issue seems to happen only in loops of type for i in range(a, a + N) as in loops of type for i in range(start, stop) and for i in range(stop), the compiler is able to raise a TypeMismatch when trying to overflow the variable. The problem has been patched in version 0.3.8.

Affected configurations

Vulners

NVD

Node

vyperlangvyperRange<0.3.8

VendorProductVersionCPE
vyperlangvyper*cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
vyperlang	vyper	*	cpe:2.3:a:vyperlang:vyper::::::::

CNA Affected

[
  {
    "vendor": "vyperlang",
    "product": "vyper",
    "versions": [
      {
        "version": "< 0.3.8",
        "status": "affected"
      }
    ]
  }
]