CVE-2018-7166

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    CVE-2018-7166

    Published: 21 Aug 2018Last Modified: 8 Jul 2026

    Summary:

    Details: In all versions of Node.js 10 prior to 10.9.0, an argument processing flaw can cause `Buffer.alloc()` to return uninitialized memory. This method is intended to be safe and only return initialized, or cleared, memory. The third argument specifying `encoding` can be passed as a number, this is misinterpreted by `Buffer's` internal "fill" method as the `start` to a fill operation. This flaw may be abused where `Buffer.alloc()` arguments are derived from user input to return uncleared memory blocks that may contain sensitive information.

    References: https://access.redhat.com/errata/RHSA-2018:2553, https://nodejs.org/en/blog/vulnerability/august-2018-security-releases/

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- cf41627411886000429bde058a6594fb7f6d6d47
    Fixed -03b825811ed4af0addcdf6e75bacb3dc1c4c5940

    Affected versions

    v10.8.0

    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
    CVE-2018-7166 | CVE-DB