Debian DSA-4812-1 : xen - security update

high Nessus Plugin ID 144322

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Synopsis

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

Description

Multiple vulnerabilities have been discovered in the Xen hypervisor :

Several security issues affecting Xenstore could result in cross domain access (denial of service, information leaks or privilege escalation) or denial of service against xenstored.

Additional vulnerabilities could result in guest-to-host denial of service.

Solution

Upgrade the xen packages.

For the stable distribution (buster), these problems have been fixed in version 4.11.4+57-g41a822c392-2.

Plugin Details

Severity: High

ID: 144322

File Name: debian_DSA-4812.nasl

Version: 1.7

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 12/16/2020

Updated: 2/1/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2020-29479

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 Score Source: CVE-2020-29481

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/15/2020

Vulnerability Publication Date: 12/15/2020

Reference Information

CVE: CVE-2020-29479, CVE-2020-29480, CVE-2020-29481, CVE-2020-29482, CVE-2020-29483, CVE-2020-29484, CVE-2020-29485, CVE-2020-29486, CVE-2020-29566, CVE-2020-29570, CVE-2020-29571

DSA: 4812

IAVB: 2020-B-0077-S

Detections

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