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Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : Intel Microcode vulnerabilities (USN-6967-1)

high Nessus Plugin ID 205778

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Synopsis

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

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6967-1 advisory.

 It was discovered that some Intel Core Ultra Processors did not properly isolate the stream cache. A local authenticated user could potentially use this to escalate their privileges. (CVE-2023-42667)

 It was discovered that some Intel Processors did not properly isolate the stream cache. A local authenticated user could potentially use this to escalate their privileges. (CVE-2023-49141)

 It was discovered that some Intel Processors did not correctly transition between the executive monitor and SMI transfer monitor (STM). A privileged local attacker could use this to escalate their privileges.
 (CVE-2024-24853)

 It was discovered that some 3rd, 4th, and 5th Generation Intel Xeon Processors failed to properly implement a protection mechanism. A local attacker could use this to potentially escalate their privileges. (CVE-2024-24980)

 It was discovered that some 3rd Generation Intel Xeon Scalable Processors did not properly handle mirrored regions with different values. A privileged local user could use this to cause a denial of service (system crash). (CVE-2024-25939)

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 intel-microcode package.

See Also

https://ubuntu.com/security/notices/USN-6967-1

Plugin Details

Severity: High

ID: 205778

File Name: ubuntu_USN-6967-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 8/19/2024

Updated: 9/18/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.4

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

CVSS Score Source: CVE-2023-49141

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

CVSS v4

Risk Factor: High

Base Score: 7.3

Threat Score: 4.1

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS Score Source: CVE-2024-24853

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:intel-microcode

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/19/2024

Vulnerability Publication Date: 8/5/2024

Reference Information

CVE: CVE-2023-42667, CVE-2023-49141, CVE-2024-24853, CVE-2024-24980, CVE-2024-25939

USN: 6967-1