PYSEC-2022-196

    Dashboard / Vulnerabilities / PYSEC-2022-196

    PYSEC-2022-196

    Published: 4 Apr 2022Last Modified: 8 Nov 2023

    Summary:

    Details: Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine. In version 0.3.1 and prior, bytestrings can have dirty bytes in them, resulting in the word-for-word comparisons giving incorrect results. Even without dirty nonzero bytes, two bytestrings can compare to equal if one ends with `"\x00"` because there is no comparison of the length. A patch is available and expected to be part of the 0.3.2 release. There are currently no known workarounds.

    References: https://github.com/vyperlang/vyper/commit/2c73f8352635c0a433423a5b94740de1a118e508, https://github.com/vyperlang/vyper/security/advisories/GHSA-7vrm-3jc8-5wwm

    Affected packages

    Package

    Name: vyper

    Purl: pkg:pypi/vyper

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -2c73f8352635c0a433423a5b94740de1a118e508

    Affected versions

    0.1.0b1
    0.1.0b10
    0.1.0b11
    0.1.0b12
    0.1.0b13
    0.1.0b14
    0.1.0b15
    0.1.0b16
    0.1.0b17
    0.1.0b2
    0.1.0b3
    0.1.0b4
    0.1.0b5
    0.1.0b6
    0.1.0b7
    0.1.0b8
    0.1.0b9

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    PYSEC-2022-196 | CVE-DB