UBUNTU-CVE-2019-3843

    Dashboard / Vulnerabilities / UBUNTU-CVE-2019-3843

    UBUNTU-CVE-2019-3843

    Published: 26 Apr 2019Last Modified: 22 Apr 2026
    Upstream:
    CVE-2019-3843
    Aliases:
    USN-4269-1

    Summary:

    Details: It was discovered that a systemd service that uses DynamicUser property can create a SUID/SGID binary that would be allowed to run as the transient service UID/GID even after the service is terminated. A local attacker may use this flaw to access resources that will be owned by a potentially different service in the future, when the UID/GID will be recycled.

    References: https://ubuntu.com/security/CVE-2019-3843, https://github.com/systemd/systemd-stable/pull/54, https://ubuntu.com/security/notices/USN-4269-1, https://www.cve.org/CVERecord?id=CVE-2019-3843

    Affected packages

    Package

    Name: systemd

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -237-3ubuntu10.38

    Affected versions

    234-2ubuntu12

    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