Debian DSA-4934-1 : intel-microcode - security update

high Nessus Plugin ID 151037


The remote Debian host is missing a security-related update.


This update ships updated CPU microcode for some types of Intel CPUs and provides mitigations for security vulnerabilities which could result in privilege escalation in combination with VT-d and various side channel attacks.


Upgrade the intel-microcode packages.

For the stable distribution (buster), these problems have been fixed in version 3.20210608.2~deb10u1.

Note that there are two reported regressions; for some CoffeeLake CPUs this update may break iwlwifi ( ssues/56) and some for Skylake R0/D0 CPUs on systems using a very outdated firmware/BIOS, the system may hang on boot:
( ssues/31)

If you are affected by those issues, you can recover by disabling microcode loading on boot (as documented in README.Debian, also available online at ME.Debian)

See Also

Plugin Details

Severity: High

ID: 151037

File Name: debian_DSA-4934.nasl

Version: 1.24

Type: local

Agent: unix

Published: 6/28/2021

Updated: 10/18/2023

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

Risk Information


Risk Factor: Medium

Score: 6.5


Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2020-24489


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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:intel-microcode, cpe:/o:debian:debian_linux:10.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/26/2021

Vulnerability Publication Date: 6/9/2021

Reference Information

CVE: CVE-2020-24489, CVE-2020-24511, CVE-2020-24512, CVE-2020-24513

DSA: 4934