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

High Nessus Plugin ID 112058


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


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.


Update the affected base-files package.

Plugin Details

Severity: High

ID: 112058

File Name: ubuntu_USN-3748-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2018/08/22

Modified: 2018/08/22

Dependencies: 12634

Risk Information

Risk Factor: High

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