UBUNTU-CVE-2019-3881

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    UBUNTU-CVE-2019-3881

    Published: 4 Sept 2020Last Modified: 4 Feb 2026
    Upstream:
    CVE-2019-3881
    Aliases:
    USN-4870-1

    Summary:

    Details: Bundler prior to 2.1.0 uses a predictable path in /tmp/, created with insecure permissions as a storage location for gems, if locations under the user's home directory are not available. If Bundler is used in a scenario where the user does not have a writable home directory, an attacker could place malicious code in this directory that would be later loaded and executed.

    References: https://ubuntu.com/security/CVE-2019-3881, https://salsa.debian.org/ruby-team/bundler/blob/debian/1.16.1-2/debian/patches/0006-Don-t-use-insecure-temporary-directory-as-home-direc.patch, https://salsa.debian.org/ruby-team/bundler/blob/debian/1.16.1-2/debian/patches/0007-Remove-temporary-home-directories.patch, https://ubuntu.com/security/notices/USN-4870-1, https://www.cve.org/CVERecord?id=CVE-2019-3881

    Affected packages

    Package

    Name: bundler

    Purl: pkg:deb/ubuntu/[email protected]~esm1?arch=source&distro=esm-apps/bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.16.1-1ubuntu0.1~esm1

    Affected versions

    1.15.1-1

    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-2019-3881 | CVE-DB