Ubuntu 16.04 LTS / 18.04 LTS / 19.04 : linux-aws, linux-aws-hwe vulnerability (USN-4096-1)

High Nessus Plugin ID 127891

Synopsis

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

Description

Andrei Vlad Lutas and Dan Lutas discovered that some x86 processors incorrectly handle SWAPGS instructions during speculative execution. A local attacker could use this to expose sensitive information (kernel memory).

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.

See Also

https://usn.ubuntu.com/4096-1/

Plugin Details

Severity: High

ID: 127891

File Name: ubuntu_USN-4096-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2019/08/14

Updated: 2019/08/14

Dependencies: 122878, 12634

Risk Information

Risk Factor: High

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-aws-hwe, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:19.04

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

Patch Publication Date: 2019/08/13

Reference Information

CVE: CVE-2019-1125

USN: 4096-1