Debian DLA-2743-1 : amd64-microcode - LTS security update

medium Nessus Plugin ID 154200

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Synopsis

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

Description

The remote Debian 9 host has a package installed that is affected by a vulnerability as referenced in the dla-2743 advisory.

It was discovered that systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis (Spectre v2). Multiple fixes were done already in Linux kernel, intel-microcode, et al. This fix adds amd-microcode-based IBPB support. For Debian 9 stretch, this problem has been fixed in version 3.20181128.1~deb9u1. We recommend that you upgrade your amd64-microcode packages. For the detailed security status of amd64-microcode please refer to its security tracker page at: https://security- tracker.debian.org/tracker/amd64-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

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

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the amd64-microcode packages.

For Debian 9 stretch, this problem has been fixed in version 3.20181128.1~deb9u1.

Plugin Details

Severity: Medium

ID: 154200

File Name: debian_DLA-2743.nasl

Version: 1.5

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 10/18/2021

Updated: 1/24/2025

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

Risk Information

VPR

Risk Factor: High

Score: 7.6

CVSS v2

Risk Factor: Low

Base Score: 1.9

Temporal Score: 1.7

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

CVSS Score Source: CVE-2017-5715

CVSS v3

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 5.4

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

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:amd64-microcode

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/16/2021

Vulnerability Publication Date: 1/3/2018

Reference Information

CVE: CVE-2017-5715

IAVA: 2018-A-0017-S, 2018-A-0020, 2018-A-0022-S, 2018-A-0032-S

Detections

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