CVE-2018-6335

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    CVE-2018-6335

    Published: 31 Dec 2018Last Modified: 8 Jul 2026

    Summary:

    Details: A Malformed h2 frame can cause 'std::out_of_range' exception when parsing priority meta data. This behavior can lead to denial-of-service. This affects all supported versions of HHVM (3.25.2, 3.24.6, and 3.21.10 and below) when using the proxygen server to handle HTTP2 requests.

    References: https://hhvm.com/blog/2018/05/04/hhvm-3.25.3.html, https://github.com/facebook/hhvm/commit/4cb57dd753a339654ca464c139db9871fe961d56

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    3.24.6

    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