CVE-2024-26149 Vyper _abi_decode Memory Overflow

2024-02-2620:16:01

CWE-119

GitHub_M

github.com

vyper

_abi_decode

memory overflow

smart contract language

ethereum

vulnerability

exploit

array

CVSS3

3.7

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

Confidence

Low

SSVC

Exploitation

poc

Automatable

Technical Impact

partial

JSON

Vyper is a pythonic Smart Contract Language for the ethereum virtual machine. If an excessively large value is specified as the starting index for an array in _abi_decode, it can cause the read position to overflow. This results in the decoding of values outside the intended array bounds, potentially leading to exploitations in contracts that use arrays within _abi_decode. This vulnerability affects 0.3.10 and earlier versions.

ADP Affected

[
  {
    "cpes": [
      "cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:python:*:*"
    ],
    "vendor": "vyperlang",
    "product": "vyper",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "versionType": "custom",
        "lessThanOrEqual": "0.3.10"
      }
    ],
    "defaultStatus": "unknown"
  }
]