UBUNTU-CVE-2020-1900

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    UBUNTU-CVE-2020-1900

    Published: 11 Mar 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2020-1900

    Summary:

    Details: When unserializing an object with dynamic properties HHVM needs to pre-reserve the full size of the dynamic property array before inserting anything into it. Otherwise the array might resize, invalidating previously stored references. This pre-reservation was not occurring in HHVM prior to v4.32.3, between versions 4.33.0 and 4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62.0.

    References: https://ubuntu.com/security/CVE-2020-1900, https://github.com/facebook/hhvm/commit/c1c4bb0cf9e076aafaf4ff3515556ef9faf906f3, https://hhvm.com/blog/2020/06/30/security-update.html, https://www.cve.org/CVERecord?id=CVE-2020-1900

    Affected packages

    Package

    Name: hhvm

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-1ubuntu1?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    3.11.0+dfsg-1
    3.11.1+dfsg-1
    3.11.1+dfsg-1ubuntu1

    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
    UBUNTU-CVE-2020-1900 | CVE-DB