openSUSE Security Update : xen (openSUSE-2020-1844)

high Nessus Plugin ID 142526

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New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote openSUSE host is missing a security update.

Description

This update for xen fixes the following issues :

- bsc#1177409 - VUL-0: CVE-2020-27673: xen: x86 PV guest INVLPG-like flushes may leave stale TLB entries (XSA-286)

- bsc#1177412 - VUL-0: CVE-2020-27672: xen: Race condition in Xen mapping code (XSA-345)

- bsc#1177413 - VUL-0: CVE-2020-27671: xen: undue deferral of IOMMU TLB flushes (XSA-346)

- bsc#1177414 - VUL-0: CVE-2020-27670: xen: unsafe AMD IOMMU page table updates (XSA-347)

This update was imported from the SUSE:SLE-15-SP1:Update update project.

Solution

Update the affected xen packages.

See Also

https://bugzilla.opensuse.org/show_bug.cgi?id=1177409

https://bugzilla.opensuse.org/show_bug.cgi?id=1177412

https://bugzilla.opensuse.org/show_bug.cgi?id=1177413

https://bugzilla.opensuse.org/show_bug.cgi?id=1177414

Plugin Details

Severity: High

ID: 142526

File Name: openSUSE-2020-1844.nasl

Version: 1.2

Type: local

Agent: unix

Published: 11/6/2020

Updated: 11/10/2020

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2020-27672

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.1

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

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

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

Vulnerability Information

CPE: cpe:2.3:o:novell:opensuse:15.1:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:opensuse:xen:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:opensuse:xen-debugsource:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:opensuse:xen-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:opensuse:xen-doc-html:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:opensuse:xen-libs:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:opensuse:xen-libs-32bit:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:opensuse:xen-libs-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:opensuse:xen-tools:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:opensuse:xen-tools-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:opensuse:xen-tools-domu:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:opensuse:xen-tools-domu-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:opensuse:xen-libs-32bit-debuginfo:*:*:*:*:*:*:*

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 11/5/2020

Vulnerability Publication Date: 10/22/2020

Reference Information

CVE: CVE-2020-27671, CVE-2020-27670, CVE-2020-27673, CVE-2020-27672