Ubuntu 16.04 LTS / 18.04 LTS / 19.04 : Linux kernel (AWS) vulnerability (USN-4096-1)
medium Nessus Plugin ID 127891
Language:
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
Plugin Details
Severity: Medium
ID: 127891
File Name: ubuntu_USN-4096-1.nasl
Version: 1.8
Type: local
Agent: unix
Family: Ubuntu Local Security Checks
Published: 8/14/2019
Updated: 5/11/2023
Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent
Risk Information
VPR
Risk Factor: Medium
Score: 6.1
CVSS v2
Risk Factor: Low
Base Score: 2.1
Temporal Score: 1.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N
Temporal Vector: CVSS2#E:POC/RL:OF/RC:C
CVSS v3
Risk Factor: Medium
Base Score: 5.5
Temporal Score: 5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
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
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 8/13/2019
Vulnerability Publication Date: 9/3/2019
Reference Information
CVE: CVE-2019-1125
USN: 4096-1