Ubuntu 18.04 LTS : base-files vulnerability (USN-3748-1)

Medium Nessus Plugin ID 112058

Synopsis

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

Description

Sander Bos discovered that the MOTD update script incorrectly handled temporary files. A local attacker could use this issue to cause a denial of service, or possibly escalate privileges if kernel symlink restrictions were disabled.

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 base-files package.

See Also

https://usn.ubuntu.com/3748-1/

Plugin Details

Severity: Medium

ID: 112058

File Name: ubuntu_USN-3748-1.nasl

Version: 1.2

Type: local

Agent: unix

Published: 2018/08/22

Modified: 2018/12/01

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.4

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

CVSS v3.0

Base Score: 7

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:base-files, cpe:/o:canonical:ubuntu_linux:18.04:-:lts

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

Patch Publication Date: 2018/08/21

Reference Information

CVE: CVE-2018-6557

USN: 3748-1