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Debian DSA-5459-1 : amd64-microcode - security update

medium Nessus Plugin ID 178916

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Synopsis

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

Description

The remote Debian 11 / 12 host has a package installed that is affected by multiple vulnerabilities as referenced in the dsa-5459 advisory.

 - Secure Encrypted Virtualization (SEV) on Advanced Micro Devices (AMD) Platform Security Processor (PSP;
 aka AMD Secure Processor or AMD-SP) 0.17 build 11 and earlier has an insecure cryptographic implementation. (CVE-2019-9836)

 - An issue in Zen 2 CPUs, under specific microarchitectural circumstances, may allow an attacker to potentially access sensitive information. (CVE-2023-20593)

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 amd64-microcode packages.

For the stable distribution (bookworm), this problem has been fixed in version 3.20230719.1~deb12u1.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1041863

http://www.nessus.org/u?75dfdaf9

https://www.debian.org/security/2023/dsa-5459

https://security-tracker.debian.org/tracker/CVE-2019-9836

https://security-tracker.debian.org/tracker/CVE-2023-20593

https://packages.debian.org/source/bullseye/amd64-microcode

https://packages.debian.org/source/bookworm/amd64-microcode

Plugin Details

Severity: Medium

ID: 178916

File Name: debian_DSA-5459.nasl

Version: 1.2

Type: local

Agent: unix

Published: 7/27/2023

Updated: 8/2/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2019-9836

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5

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

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

CVSS Score Source: CVE-2023-20593

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, cpe:/o:debian:debian_linux:12.0, 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: 7/25/2023

Vulnerability Publication Date: 6/25/2019

Reference Information

CVE: CVE-2019-9836, CVE-2023-20593