Detections
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Ubuntu 16.04 LTS / 18.04 LTS : systemd vulnerabilities (USN-3816-1)

high Nessus Plugin ID 118907

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3816-1 advisory.

 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)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-3816-1

Plugin Details

Severity: High

ID: 118907

File Name: ubuntu_USN-3816-1.nasl

Version: 1.11

Type: local

Agent: unix

Published: 11/13/2018

Updated: 8/27/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2018-6954

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.2

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libnss-resolve, p-cpe:/a:canonical:ubuntu_linux:udev-udeb, p-cpe:/a:canonical:ubuntu_linux:systemd-coredump, p-cpe:/a:canonical:ubuntu_linux:libnss-myhostname, p-cpe:/a:canonical:ubuntu_linux:libsystemd0, p-cpe:/a:canonical:ubuntu_linux:libudev1-udeb, p-cpe:/a:canonical:ubuntu_linux:libpam-systemd, p-cpe:/a:canonical:ubuntu_linux:systemd, p-cpe:/a:canonical:ubuntu_linux:udev, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:systemd-container, p-cpe:/a:canonical:ubuntu_linux:libsystemd-dev, p-cpe:/a:canonical:ubuntu_linux:libudev1, p-cpe:/a:canonical:ubuntu_linux:systemd-journal-remote, p-cpe:/a:canonical:ubuntu_linux:libnss-systemd, p-cpe:/a:canonical:ubuntu_linux:systemd-tests, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libudev-dev, p-cpe:/a:canonical:ubuntu_linux:systemd-sysv, p-cpe:/a:canonical:ubuntu_linux:libnss-mymachines

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/12/2018

Vulnerability Publication Date: 2/13/2018

Reference Information

CVE: CVE-2018-15686, CVE-2018-15687, CVE-2018-6954

USN: 3816-1