Ubuntu 16.04 LTS / 18.04 LTS / 18.10 : systemd vulnerabilities (USN-3855-1)

high Nessus Plugin ID 121161
New! Plugin Severity Now Using CVSS v3

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Synopsis

The remote Ubuntu host is missing a security-related patch.

Description

It was discovered that systemd-journald allocated variable-length buffers for certain message fields on the stack. A local attacker could potentially exploit this to cause a denial of service, or execute arbitrary code. (CVE-2018-16864)

It was discovered that systemd-journald allocated variable-length arrays of objects representing message fields on the stack. A local attacker could potentially exploit this to cause a denial of service, or execute arbitrary code. (CVE-2018-16865)

An out-of-bounds read was discovered in systemd-journald. A local attacker could potentially exploit this to obtain sensitive information and bypass ASLR protections. (CVE-2018-16866).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected systemd package.

See Also

https://usn.ubuntu.com/3855-1/

Plugin Details

Severity: High

ID: 121161

File Name: ubuntu_USN-3855-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 1/14/2019

Updated: 9/18/2019

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.6

Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:POC/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:systemd, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.10

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: 1/11/2019

Vulnerability Publication Date: 1/11/2019

Reference Information

CVE: CVE-2018-16864, CVE-2018-16865, CVE-2018-16866

USN: 3855-1