UBUNTU-CVE-2019-3843

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Source
https://ubuntu.com/security/CVE-2019-3843
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-3843.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2019-3843
Upstream
Downstream
Related
Published
2019-04-26T21:29:00Z
Modified
2025-09-08T16:45:14Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • 4.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
  • 7.8 (High) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
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

Affected packages

Ubuntu:18.04:LTS / systemd

Package

Name
systemd
Purl
pkg:deb/ubuntu/systemd@237-3ubuntu10.38?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
237-3ubuntu10.38

Affected versions

Other

234-2ubuntu12
235-2ubuntu3
235-3ubuntu2
235-3ubuntu3
237-3ubuntu3
237-3ubuntu4
237-3ubuntu6
237-3ubuntu7
237-3ubuntu8
237-3ubuntu10

237-3ubuntu10.*

237-3ubuntu10.2
237-3ubuntu10.3
237-3ubuntu10.4
237-3ubuntu10.6
237-3ubuntu10.9
237-3ubuntu10.11
237-3ubuntu10.12
237-3ubuntu10.13
237-3ubuntu10.15
237-3ubuntu10.17
237-3ubuntu10.19
237-3ubuntu10.20
237-3ubuntu10.21
237-3ubuntu10.22
237-3ubuntu10.23
237-3ubuntu10.24
237-3ubuntu10.25
237-3ubuntu10.26
237-3ubuntu10.28
237-3ubuntu10.29
237-3ubuntu10.31
237-3ubuntu10.33

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "libnss-myhostname"
        },
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "libnss-mymachines"
        },
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "libnss-resolve"
        },
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "libnss-systemd"
        },
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "libpam-systemd"
        },
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "libsystemd-dev"
        },
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "libsystemd0"
        },
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "libudev-dev"
        },
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "libudev1"
        },
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "systemd"
        },
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "systemd-container"
        },
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "systemd-coredump"
        },
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "systemd-journal-remote"
        },
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "systemd-sysv"
        },
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "systemd-tests"
        },
        {
            "binary_version": "237-3ubuntu10.38",
            "binary_name": "udev"
        }
    ],
    "availability": "No subscription required"
}