SUSE SLES12 Security Update : xen (SUSE-SU-2020:3742-1)

high Nessus Plugin ID 144102

Language:

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 SUSE host is missing one or more security updates.

Description

This update for xen fixes the following issues :

bsc#1178963 - stack corruption from XSA-346 change (XSA-355)

bsc#1177409 - CVE-2020-27674: x86 PV guest INVLPG-like flushes may leave stale TLB entries (XSA-286)

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

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

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

bsc#1178591 - CVE-2020-28368: Intel RAPL sidechannel attack aka PLATYPUS attack aka XSA-351

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE OpenStack Cloud 7 :

zypper in -t patch SUSE-OpenStack-Cloud-7-2020-3742=1

SUSE Linux Enterprise Server for SAP 12-SP2 :

zypper in -t patch SUSE-SLE-SAP-12-SP2-2020-3742=1

SUSE Linux Enterprise Server 12-SP2-LTSS :

zypper in -t patch SUSE-SLE-SERVER-12-SP2-2020-3742=1

SUSE Linux Enterprise Server 12-SP2-BCL :

zypper in -t patch SUSE-SLE-SERVER-12-SP2-BCL-2020-3742=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1178591

https://bugzilla.suse.com/show_bug.cgi?id=1177409

https://bugzilla.suse.com/show_bug.cgi?id=1177412

https://bugzilla.suse.com/show_bug.cgi?id=1177413

https://bugzilla.suse.com/show_bug.cgi?id=1177414

https://www.suse.com/security/cve/CVE-2020-27670/

https://www.suse.com/security/cve/CVE-2020-27671/

https://www.suse.com/security/cve/CVE-2020-27672/

https://www.suse.com/security/cve/CVE-2020-28368/

https://bugzilla.suse.com/show_bug.cgi?id=1178963

https://www.suse.com/security/cve/CVE-2020-27674/

http://www.nessus.org/u?f763e73b

Plugin Details

Severity: High

ID: 144102

File Name: suse_SU-2020-3742-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 12/11/2020

Updated: 1/13/2021

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:suse_linux:12:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:xen:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:xen-doc-html:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:xen-libs:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:xen-tools:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:xen-tools-domu:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:xen-debugsource:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:xen-libs-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:xen-tools-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:novell:suse_linux:xen-tools-domu-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: 12/10/2020

Vulnerability Publication Date: 10/22/2020

Reference Information

CVE: CVE-2020-27671, CVE-2020-27674, CVE-2020-27670, CVE-2020-27672, CVE-2020-28368