Detections
Analytics

Ubuntu 16.04 LTS : Linux kernel vulnerability (USN-4320-1)

high Nessus Plugin ID 135271

Language:

Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-4320-1 advisory.

 - fs/namei.c in the Linux kernel before 5.5 has a may_create_in_sticky use-after-free, which allows local users to cause a denial of service (OOPS) or possibly obtain sensitive information from kernel memory, aka CID-d0cb50185ae9. One attack vector may be an open system call for a UNIX domain socket, if the socket is being moved to a new parent directory and its old parent directory is being removed. (CVE-2020-8428)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected kernel package.

See Also

https://ubuntu.com/security/notices/USN-4320-1

Plugin Details

Severity: High

ID: 135271

File Name: ubuntu_USN-4320-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 4/7/2020

Updated: 1/9/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Low

Base Score: 3.6

Temporal Score: 2.7

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

CVSS Score Source: CVE-2020-8428

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1069-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1105-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1131-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1135-snapdragon, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-177-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-177-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-177-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-177-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-177-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-177-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-177-powerpc64-smp, cpe:/o:canonical:ubuntu_linux:16.04:-:lts

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/6/2020

Vulnerability Publication Date: 1/29/2020

Reference Information

CVE: CVE-2020-8428

USN: 4320-1