Ubuntu 16.04 LTS : linux-hwe, linux-azure, linux-gcp vulnerability (USN-3732-2)

High Nessus Plugin ID 111580

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

USN-3732-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 18.04 LTS for Ubuntu 16.04 LTS.

Juha-Matti Tilli discovered that the TCP implementation in the Linux kernel performed algorithmically expensive operations in some situations when handling incoming packets. A remote attacker could use this to cause a denial of service.

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 packages.

Plugin Details

Severity: High

ID: 111580

File Name: ubuntu_USN-3732-2.nasl

Version: 1.2

Type: local

Agent: unix

Published: 2018/08/07

Modified: 2018/10/12

Dependencies: 12634

Risk Information

Risk Factor: High

CVSSv2

Base Score: 7.8

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

CVSSv3

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-hwe-16.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae-hwe-16.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-hwe-16.04, cpe:/o:canonical:ubuntu_linux:16.04

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

Patch Publication Date: 2018/08/06

Reference Information

CVE: CVE-2018-5390

USN: 3732-2