USN-5226-1

It was discovered that systemd-tmpfiles employed uncontrolled recursion when removing deeply nested directory hierarchies. A local attacker could exploit this to cause systemd-tmpfiles to crash or have other unspecified impacts.

References

Affected packages

Ubuntu:20.04:LTS / systemd

Package

Name: systemd
Purl: pkg:deb/ubuntu/systemd@245.4-4ubuntu3.15?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

245.4-4ubuntu3.15

Affected versions

Other

242-7ubuntu3

243-2ubuntu1

243-3ubuntu1

244-3ubuntu1

244.*

244.1-0ubuntu2

244.1-0ubuntu3

244.2-1ubuntu1

244.3-1ubuntu1

245.*

245.2-1ubuntu1

245.2-1ubuntu2

245.4-2ubuntu1

245.4-4ubuntu1

245.4-4ubuntu3

245.4-4ubuntu3.1

245.4-4ubuntu3.2

245.4-4ubuntu3.3

245.4-4ubuntu3.4

245.4-4ubuntu3.5

245.4-4ubuntu3.6

245.4-4ubuntu3.7

245.4-4ubuntu3.10

245.4-4ubuntu3.11

245.4-4ubuntu3.13

245.4-4ubuntu3.14

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "libnss-myhostname"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "libnss-mymachines"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "libnss-resolve"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "libnss-systemd"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "libpam-systemd"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "libsystemd-dev"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "libsystemd0"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "libudev-dev"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "libudev1"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "systemd"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "systemd-container"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "systemd-coredump"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "systemd-journal-remote"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "systemd-sysv"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "systemd-tests"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "systemd-timesyncd"
        },
        {
            "binary_version": "245.4-4ubuntu3.15",
            "binary_name": "udev"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2021-3997"
        }
    ]
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5226-1.json"