CVE-2018-6337

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    CVE-2018-6337

    Published: 31 Dec 2018Last Modified: 8 Jul 2026

    Summary:

    Details: 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.

    References: https://hhvm.com/blog/2018/05/24/hhvm-3.26.3.html, https://github.com/facebook/folly/commit/8e927ee48b114c8a2f90d0cbd5ac753795a6761f, https://github.com/facebook/hhvm/commit/e2d10a1e32d01f71aaadd81169bcb9ae86c5d6b8

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 712b8b8de747960ceeceedfd3a18ee23a0c03a80
    Fixed -None

    Affected versions

    v2018.08.09.00
    v2018.08.06.00

    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