Debian dla-4002 : intel-microcode - security update

high Nessus Plugin ID 213374

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Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 11 host has a package installed that is affected by multiple vulnerabilities as referenced in the dla-4002 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-4002-1 [email protected] https://www.debian.org/lts/security/ Tobias Frost December 23, 2024 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : intel-microcode Version : 3.20241112.1~deb11u1 CVE ID : CVE-2024-23918 CVE-2024-21853 CVE-2024-21820 CVE-2024-23984 Debian Bug : 1087532

A microcode update has been released for Intel processors, addressing multiple vulnerabilties which potentially could cause local privileged escalation or local DoS.

CVE-2024-23918

Improper conditions check in some Intel(R) Xeon(R) processor memory controller configurations when using Intel(R) SGX may allow a privileged user to potentially enable escalation of privilege via local access. (INTEL-SA-01079)

CVE-2024-21853

Improper finite state machines (FSMs) in the hardware logic in some 4th and 5th Generation Intel(R) Xeon(R) Processors may allow an authorized user to potentially enable denial of service via local access. (INTEL-SA-01101)

CVE-2024-21820

Incorrect default permissions in some Intel(R) Xeon(R) processor memory controller configurations when using Intel(R) SGX may allow a privileged user to potentially enable escalation of privilege via local access.
(INTEL-SA-01079)

CVE-2024-23984 (already adressed in a previous upload, this upload adds more processor models.)

Observable discrepancy in RAPL interface for some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access.

For Debian 11 bullseye, this problem has been fixed in version 3.20241112.1~deb11u1.

We recommend that you upgrade your intel-microcode packages.

For the detailed security status of intel-microcode please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/intel-microcode

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS Attachment:
signature.asc Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian 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

Upgrade the intel-microcode packages.

Plugin Details

Severity: High

ID: 213374

File Name: debian_DLA-4002.nasl

Version: 1.1

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 12/23/2024

Updated: 12/23/2024

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

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-2024-23918

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:L/AC:L/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: 8.8

Threat Score: 5.8

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:intel-microcode

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/23/2024

Vulnerability Publication Date: 9/10/2024

Reference Information

CVE: CVE-2024-21820, CVE-2024-21853, CVE-2024-23918, CVE-2024-23984

Detections

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