Debian DSA-4977-1 : xen - security update

high Nessus Plugin ID 153509

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Synopsis

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

Description

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-4977 advisory.

Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in privilege escalation, denial of service or information leaks. With the end of upstream support for the 4.11 branch, the version of xen in the oldstable distribution (buster) is no longer supported. If you rely on security support for your Xen installation an update to the stable distribution (bullseye) is recommended. For the stable distribution (bullseye), these problems have been fixed in version 4.14.3-1~deb11u1. We recommend that you upgrade your xen packages. For the detailed security status of xen please refer to its security tracker page at: https://security-tracker.debian.org/tracker/xen

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 xen packages.

For the stable distribution (bullseye), these problems have been fixed in version 4.14.3-1~deb11u1.

Plugin Details

Severity: High

ID: 153509

File Name: debian_DSA-4977.nasl

Version: 1.6

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 9/21/2021

Updated: 1/24/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

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-2021-28697

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:H/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-2021-28701

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libxenstore3.0, p-cpe:/a:debian:debian_linux:xen-utils-4.14, p-cpe:/a:debian:debian_linux:xen-hypervisor-4.14-amd64, cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:xen-system-armhf, p-cpe:/a:debian:debian_linux:libxencall1, p-cpe:/a:debian:debian_linux:libxenforeignmemory1, p-cpe:/a:debian:debian_linux:libxentoollog1, p-cpe:/a:debian:debian_linux:libxengnttab1, p-cpe:/a:debian:debian_linux:libxendevicemodel1, p-cpe:/a:debian:debian_linux:xen-hypervisor-common, p-cpe:/a:debian:debian_linux:xen-utils-common, p-cpe:/a:debian:debian_linux:xen-system-amd64, p-cpe:/a:debian:debian_linux:xen-system-arm64, p-cpe:/a:debian:debian_linux:libxen-dev, p-cpe:/a:debian:debian_linux:xen-hypervisor-4.14-arm64, p-cpe:/a:debian:debian_linux:libxenmisc4.14, p-cpe:/a:debian:debian_linux:libxenhypfs1, p-cpe:/a:debian:debian_linux:xenstore-utils, p-cpe:/a:debian:debian_linux:libxenevtchn1, p-cpe:/a:debian:debian_linux:libxentoolcore1, p-cpe:/a:debian:debian_linux:xen-hypervisor-4.14-armhf, p-cpe:/a:debian:debian_linux:xen-doc

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/20/2021

Vulnerability Publication Date: 8/27/2021

Reference Information

CVE: CVE-2021-28694, CVE-2021-28695, CVE-2021-28696, CVE-2021-28697, CVE-2021-28698, CVE-2021-28699, CVE-2021-28700, CVE-2021-28701

IAVB: 2021-B-0060-S

Detections

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