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vuln-ubuntu/data/osv/usn/USN-3816-1.json
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{
"schema_version": "1.7.0",
"id": "USN-3816-1",
"summary": "systemd vulnerabilities",
"details": "Jann Horn discovered that unit_deserialize incorrectly handled status messages\nabove a certain length. A local attacker could potentially exploit this via\nNotifyAccess to inject arbitrary state across re-execution and obtain root\nprivileges. (CVE-2018-15686)\n\nJann Horn discovered a race condition in chown_one(). A local attacker\ncould potentially exploit this by setting arbitrary permissions on certain\nfiles to obtain root privileges. This issue only affected Ubuntu 18.04 LTS\nand Ubuntu 18.10. (CVE-2018-15687)\n\nIt was discovered that systemd-tmpfiles mishandled symlinks in\nnon-terminal path components. A local attacker could potentially exploit\nthis by gaining ownership of certain files to obtain root privileges. This\nissue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2018-6954)\n",
"aliases": [],
"upstream": [
"UBUNTU-CVE-2018-6954",
"UBUNTU-CVE-2018-15686",
"UBUNTU-CVE-2018-15687"
],
"related": [],
"published": "2018-11-12T17:32:15Z",
"modified": "2026-04-22T07:36:36Z",
"affected": [
{
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "systemd",
"purl": "pkg:deb/ubuntu/systemd@229-4ubuntu21.8?arch=source&distro=xenial"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "229-4ubuntu21.8"
}
]
}
],
"versions": [
"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",
"229-4ubuntu21.1",
"229-4ubuntu21.2",
"229-4ubuntu21.3",
"229-4ubuntu21.4",
"229-4ubuntu21.5",
"229-4ubuntu21.6"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libnss-myhostname",
"binary_version": "229-4ubuntu21.8"
},
{
"binary_name": "libnss-mymachines",
"binary_version": "229-4ubuntu21.8"
},
{
"binary_name": "libnss-resolve",
"binary_version": "229-4ubuntu21.8"
},
{
"binary_name": "libpam-systemd",
"binary_version": "229-4ubuntu21.8"
},
{
"binary_name": "libsystemd0",
"binary_version": "229-4ubuntu21.8"
},
{
"binary_name": "libudev1",
"binary_version": "229-4ubuntu21.8"
},
{
"binary_name": "systemd",
"binary_version": "229-4ubuntu21.8"
},
{
"binary_name": "systemd-container",
"binary_version": "229-4ubuntu21.8"
},
{
"binary_name": "systemd-coredump",
"binary_version": "229-4ubuntu21.8"
},
{
"binary_name": "systemd-journal-remote",
"binary_version": "229-4ubuntu21.8"
},
{
"binary_name": "systemd-sysv",
"binary_version": "229-4ubuntu21.8"
},
{
"binary_name": "udev",
"binary_version": "229-4ubuntu21.8"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:16.04:LTS",
"cves": [
{
"id": "CVE-2018-15686",
"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:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2018-15687",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/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": "CVSS_V3",
"score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
},
{
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "systemd",
"purl": "pkg:deb/ubuntu/systemd@237-3ubuntu10.6?arch=source&distro=bionic"
},
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "237-3ubuntu10.6"
}
]
}
],
"versions": [
"234-2ubuntu12",
"235-2ubuntu3",
"235-3ubuntu2",
"235-3ubuntu3",
"237-3ubuntu3",
"237-3ubuntu4",
"237-3ubuntu6",
"237-3ubuntu7",
"237-3ubuntu8",
"237-3ubuntu10",
"237-3ubuntu10.2",
"237-3ubuntu10.3",
"237-3ubuntu10.4"
],
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libnss-myhostname",
"binary_version": "237-3ubuntu10.6"
},
{
"binary_name": "libnss-mymachines",
"binary_version": "237-3ubuntu10.6"
},
{
"binary_name": "libnss-resolve",
"binary_version": "237-3ubuntu10.6"
},
{
"binary_name": "libnss-systemd",
"binary_version": "237-3ubuntu10.6"
},
{
"binary_name": "libpam-systemd",
"binary_version": "237-3ubuntu10.6"
},
{
"binary_name": "libsystemd0",
"binary_version": "237-3ubuntu10.6"
},
{
"binary_name": "libudev1",
"binary_version": "237-3ubuntu10.6"
},
{
"binary_name": "systemd",
"binary_version": "237-3ubuntu10.6"
},
{
"binary_name": "systemd-container",
"binary_version": "237-3ubuntu10.6"
},
{
"binary_name": "systemd-coredump",
"binary_version": "237-3ubuntu10.6"
},
{
"binary_name": "systemd-journal-remote",
"binary_version": "237-3ubuntu10.6"
},
{
"binary_name": "systemd-sysv",
"binary_version": "237-3ubuntu10.6"
},
{
"binary_name": "systemd-tests",
"binary_version": "237-3ubuntu10.6"
},
{
"binary_name": "udev",
"binary_version": "237-3ubuntu10.6"
}
],
"availability": "No subscription required"
},
"database_specific": {
"cves_map": {
"ecosystem": "Ubuntu:18.04:LTS",
"cves": [
{
"id": "CVE-2018-15686",
"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:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2018-15687",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/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": "CVSS_V3",
"score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
]
}
}
}
],
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-3816-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-6954"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-15686"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-15687"
}
]
}
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