UBUNTU-CVE-2020-1899

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    UBUNTU-CVE-2020-1899

    Published: 11 Mar 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2020-1899

    Summary:

    Details: The unserialize() function supported a type code, "S", which was meant to be supported only for APC serialization. This type code allowed arbitrary memory addresses to be accessed as if they were static StringData objects. This issue affected 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-2020-1899, https://github.com/facebook/hhvm/commit/1107228a5128d3ca1c4add8ac1635d933cbbe2e9, https://hhvm.com/blog/2020/06/30/security-update.html, https://www.cve.org/CVERecord?id=CVE-2020-1899

    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-2020-1899 | CVE-DB