Detections
Analytics

Ubuntu 18.04 ESM / 20.04 LTS : Linux kernel vulnerabilities (USN-6387-1)

high Nessus Plugin ID 181641

Language:

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 ESM / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6387-1 advisory.

 - A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality. (CVE-2023-20588)

 - An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled. (CVE-2023-40283)

Note that Nessus has not tested for these issues 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-6387-1

Plugin Details

Severity: High

ID: 181641

File Name: ubuntu_USN-6387-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 9/19/2023

Updated: 1/9/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2023-40283

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1113-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-163-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1116-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-163-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1022-iot, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1099-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1110-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-163-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1030-xilinx-zynqmp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1077-gkeop, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1057-ibm, cpe:/o:canonical:ubuntu_linux:18.04:-:esm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1109-oracle

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: 9/19/2023

Vulnerability Publication Date: 8/8/2023

Reference Information

CVE: CVE-2023-20588, CVE-2023-40283, CVE-2023-4128

USN: 6387-1