CVE-2018-3759

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    CVE-2018-3759

    Published: 13 Jun 2018Last Modified: 8 Jul 2026

    Summary:

    Details: private_address_check ruby gem before 0.5.0 is vulnerable to a time-of-check time-of-use (TOCTOU) race condition due to the address the socket uses not being checked. DNS entries with a TTL of 0 can trigger this case where the initial resolution is a public address but the subsequent resolution is a private address.

    References: https://github.com/jtdowney/private_address_check/commit/4068228187db87fea7577f7020099399772bb147

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -0498dcf8e0705c45b1f888e24be59939e5aecbcb

    Affected versions

    v0.4.1
    v0.4.0

    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