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Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-6923-2)

high Nessus Plugin ID 204855

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Synopsis

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

Description

The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6923-2 advisory.

 Benedict Schlter, Supraja Sridhara, Andrin Bertschi, and Shweta Shinde discovered that an untrusted hypervisor could inject malicious #VC interrupts and compromise the security guarantees of AMD SEV-SNP.
 This flaw is known as WeSee. A local attacker in control of the hypervisor could use this to expose sensitive information or possibly execute arbitrary code in the trusted execution environment.
 (CVE-2024-25742)

 Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems:

 - TTY drivers;

 - SMB network file system;

 - Netfilter;

 - Bluetooth subsystem; (CVE-2024-26886, CVE-2023-52752, CVE-2024-36016, CVE-2024-26952, CVE-2024-27017)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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-6923-2

Plugin Details

Severity: High

ID: 204855

File Name: ubuntu_USN-6923-2.nasl

Version: 1.2

Type: local

Agent: unix

Published: 7/30/2024

Updated: 8/27/2024

Supported Sensors: Agentless Assessment, Continuous 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

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

CVSS Score Source: CVE-2024-26952

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1066-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1059-ibm, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1059-raspi

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/30/2024

Vulnerability Publication Date: 4/10/2024

Reference Information

CVE: CVE-2023-52752, CVE-2024-25742, CVE-2024-26886, CVE-2024-26952, CVE-2024-27017, CVE-2024-36016

USN: 6923-2