Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS : AppArmor update (USN-3784-1)

High Nessus Plugin ID 117934

Synopsis

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

Description

As a security improvement, this update adjusts the private-files abstraction to disallow writing to thumbnailer configuration files.
Additionally adjust the private-files, private-files-strict and user-files abstractions to disallow writes on parent directories of sensitive files.

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 apparmor package.

See Also

https://usn.ubuntu.com/3784-1/

Plugin Details

Severity: High

ID: 117934

File Name: ubuntu_USN-3784-1.nasl

Version: 1.2

Type: local

Agent: unix

Published: 2018/10/05

Modified: 2018/12/01

Dependencies: 12634

Risk Information

Risk Factor: High

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:apparmor, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:16.04, 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: 2018/10/04

Reference Information

USN: 3784-1