CVE-2023-30837 Vyper storage allocator overflow

2023-05-0816:03:06

CWE-789

GitHub_M

www.cve.org

vyper

storage allocator

overflow

pythonic smart contract

evm

allocation

0.3.8 fix

owner variable

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

29.5%

JSON

Vyper is a pythonic smart contract language for the EVM. The storage allocator does not guard against allocation overflows in versions prior to 0.3.8. An attacker can overwrite the owner variable. This issue was fixed in version 0.3.8.

CNA Affected

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