USN-3816-2

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/notices/USN-3816-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3816-2.json
JSON Data
https://api.osv.dev/v1/vulns/USN-3816-2
Upstream
Related
Published
2018-11-19T22:03:24.923072Z
Modified
2025-10-13T04:34:44Z
Summary
systemd vulnerability
Details

USN-3816-1 fixed several vulnerabilities in systemd. However, the fix for CVE-2018-6954 was not sufficient. This update provides the remaining fixes.

We apologize for the inconvenience.

Original advisory details:

Jann Horn discovered that unit_deserialize incorrectly handled status messages above a certain length. A local attacker could potentially exploit this via NotifyAccess to inject arbitrary state across re-execution and obtain root privileges. (CVE-2018-15686)

Jann Horn discovered a race condition in chown_one(). A local attacker could potentially exploit this by setting arbitrary permissions on certain files to obtain root privileges. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-15687)

It was discovered that systemd-tmpfiles mishandled symlinks in non-terminal path components. A local attacker could potentially exploit this by gaining ownership of certain files to obtain root privileges. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2018-6954)

References

Affected packages

Ubuntu:16.04:LTS / systemd

Package

Name
systemd
Purl
pkg:deb/ubuntu/systemd@229-4ubuntu21.9?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
229-4ubuntu21.9

Affected versions

Other

225-1ubuntu9
227-2ubuntu1
227-2ubuntu2
228-1ubuntu2
228-2ubuntu1
228-2ubuntu2
228-3ubuntu1
228-4ubuntu1
228-4ubuntu2
228-5ubuntu1
228-5ubuntu2
228-5ubuntu3
228-6ubuntu1
229-1ubuntu2
229-1ubuntu4
229-2ubuntu1
229-3ubuntu1
229-3ubuntu2
229-4ubuntu1
229-4ubuntu4
229-4ubuntu5
229-4ubuntu6
229-4ubuntu7
229-4ubuntu8
229-4ubuntu10
229-4ubuntu11
229-4ubuntu12
229-4ubuntu13
229-4ubuntu16
229-4ubuntu17
229-4ubuntu19
229-4ubuntu20
229-4ubuntu21

229-4ubuntu21.*

229-4ubuntu21.1
229-4ubuntu21.2
229-4ubuntu21.3
229-4ubuntu21.4
229-4ubuntu21.5
229-4ubuntu21.6
229-4ubuntu21.8

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "229-4ubuntu21.9",
            "binary_name": "libnss-myhostname"
        },
        {
            "binary_version": "229-4ubuntu21.9",
            "binary_name": "libnss-mymachines"
        },
        {
            "binary_version": "229-4ubuntu21.9",
            "binary_name": "libnss-resolve"
        },
        {
            "binary_version": "229-4ubuntu21.9",
            "binary_name": "libpam-systemd"
        },
        {
            "binary_version": "229-4ubuntu21.9",
            "binary_name": "libsystemd-dev"
        },
        {
            "binary_version": "229-4ubuntu21.9",
            "binary_name": "libsystemd0"
        },
        {
            "binary_version": "229-4ubuntu21.9",
            "binary_name": "libudev-dev"
        },
        {
            "binary_version": "229-4ubuntu21.9",
            "binary_name": "libudev1"
        },
        {
            "binary_version": "229-4ubuntu21.9",
            "binary_name": "systemd"
        },
        {
            "binary_version": "229-4ubuntu21.9",
            "binary_name": "systemd-container"
        },
        {
            "binary_version": "229-4ubuntu21.9",
            "binary_name": "systemd-coredump"
        },
        {
            "binary_version": "229-4ubuntu21.9",
            "binary_name": "systemd-journal-remote"
        },
        {
            "binary_version": "229-4ubuntu21.9",
            "binary_name": "systemd-sysv"
        },
        {
            "binary_version": "229-4ubuntu21.9",
            "binary_name": "udev"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:16.04:LTS",
    "cves": []
}

Ubuntu:18.04:LTS / systemd

Package

Name
systemd
Purl
pkg:deb/ubuntu/systemd@237-3ubuntu10.9?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
237-3ubuntu10.9

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "libnss-myhostname"
        },
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "libnss-mymachines"
        },
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "libnss-resolve"
        },
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "libnss-systemd"
        },
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "libpam-systemd"
        },
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "libsystemd-dev"
        },
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "libsystemd0"
        },
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "libudev-dev"
        },
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "libudev1"
        },
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "systemd"
        },
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "systemd-container"
        },
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "systemd-coredump"
        },
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "systemd-journal-remote"
        },
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "systemd-sysv"
        },
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "systemd-tests"
        },
        {
            "binary_version": "237-3ubuntu10.9",
            "binary_name": "udev"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:18.04:LTS",
    "cves": [
        {
            "id": "CVE-2018-6954",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}