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    CVE-2018-6337

    folly::secureRandom will re-use a buffer between parent and child processes when fork() is called. That will result in multiple forked children producing repeat (or similar) results. This affects HHVM 3.26 prior to 3.26.3 and the folly library between v2017.12.11.00 and v2018.08.09.00.

    Published:Dec 31, 2018
    Last Modified:May 6, 2025
    EPS:Dec 31, 2018
    EPSS Score:0.00289
    CVSS Score:7.5

    Affected Products

    Vendor
    Facebook
    Product
    Folly
    Vendor
    Facebook
    Product
    Hhvm

    Exploits

    No exploit reference

    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