UBUNTU-CVE-2020-1918

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    UBUNTU-CVE-2020-1918

    Published: 10 Mar 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2020-1918

    Summary:

    Details: In-memory file operations (ie: using fopen on a data URI) did not properly restrict negative seeking, allowing for the reading of memory prior to the in-memory buffer. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.

    References: https://ubuntu.com/security/CVE-2020-1918, https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44ca, https://hhvm.com/blog/2021/02/25/security-update.html, https://www.cve.org/CVERecord?id=CVE-2020-1918

    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-2020-1918 | CVE-DB