SUSE SLES12 Security Update : xen (SUSE-SU-2020:1630-1)

high Nessus Plugin ID 137624

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

This update for xen fixes the following issues :

CVE-2020-0543: Fixed a side channel attack against special registers which could have resulted in leaking of read values to cores other than the one which called it. This attack is known as Special Register Buffer Data Sampling (SRBDS) or 'CrossTalk' (bsc#1172205).

CVE-2020-11742: Bad continuation handling in GNTTABOP_copy (bsc#1169392).

CVE-2020-11740, CVE-2020-11741: xen: XSA-313 multiple xenoprof issues (bsc#1168140).

CVE-2020-11739: Missing memory barriers in read-write unlock paths (bsc#1168142).

CVE-2019-19583: Fixed improper checks which could have allowed HVM/PVH guest userspace code to crash the guest, leading to a guest denial of service (bsc#1158004 XSA-308).

CVE-2019-19581: Fixed a potential out of bounds on 32-bit Arm (bsc#1158003 XSA-307).

CVE-2019-19580: Fixed a privilege escalation where a malicious PV guest administrator could have been able to escalate their privilege to that of the host (bsc#1158006 XSA-310).

CVE-2019-19579: Fixed a privilege escalation where an untrusted domain with access to a physical device can DMA into host memory (bsc#1157888 XSA-306).

CVE-2019-19578: Fixed an issue where a malicious or buggy PV guest could have caused hypervisor crash resulting in denial of service affecting the entire host (bsc#1158005 XSA-309).

CVE-2019-19577: Fixed an issue where a malicious guest administrator could have caused Xen to access data structures while they are being modified leading to a crash (bsc#1158007 XSA-311).

Xenstored Crashed during VM install (bsc#1167152)

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 Crowbar 8 :

zypper in -t patch SUSE-OpenStack-Cloud-Crowbar-8-2020-1630=1

SUSE OpenStack Cloud 8 :

zypper in -t patch SUSE-OpenStack-Cloud-8-2020-1630=1

SUSE Linux Enterprise Server for SAP 12-SP3 :

zypper in -t patch SUSE-SLE-SAP-12-SP3-2020-1630=1

SUSE Linux Enterprise Server 12-SP3-LTSS :

zypper in -t patch SUSE-SLE-SERVER-12-SP3-2020-1630=1

SUSE Linux Enterprise Server 12-SP3-BCL :

zypper in -t patch SUSE-SLE-SERVER-12-SP3-BCL-2020-1630=1

SUSE Enterprise Storage 5 :

zypper in -t patch SUSE-Storage-5-2020-1630=1

HPE Helion Openstack 8 :

zypper in -t patch HPE-Helion-OpenStack-8-2020-1630=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1157888

https://bugzilla.suse.com/show_bug.cgi?id=1158003

https://bugzilla.suse.com/show_bug.cgi?id=1158004

https://bugzilla.suse.com/show_bug.cgi?id=1158005

https://bugzilla.suse.com/show_bug.cgi?id=1158006

https://bugzilla.suse.com/show_bug.cgi?id=1158007

https://bugzilla.suse.com/show_bug.cgi?id=1161181

https://bugzilla.suse.com/show_bug.cgi?id=1167152

https://bugzilla.suse.com/show_bug.cgi?id=1168140

https://bugzilla.suse.com/show_bug.cgi?id=1168142

https://bugzilla.suse.com/show_bug.cgi?id=1169392

https://bugzilla.suse.com/show_bug.cgi?id=1172205

https://www.suse.com/security/cve/CVE-2019-19577/

https://www.suse.com/security/cve/CVE-2019-19578/

https://www.suse.com/security/cve/CVE-2019-19579/

https://www.suse.com/security/cve/CVE-2019-19580/

https://www.suse.com/security/cve/CVE-2019-19581/

https://www.suse.com/security/cve/CVE-2019-19583/

https://www.suse.com/security/cve/CVE-2020-0543/

https://www.suse.com/security/cve/CVE-2020-11739/

https://www.suse.com/security/cve/CVE-2020-11740/

https://www.suse.com/security/cve/CVE-2020-11741/

https://www.suse.com/security/cve/CVE-2020-11742/

https://www.suse.com/security/cve/CVE-2020-7211/

http://www.nessus.org/u?0121a5ca

Plugin Details

Severity: High

ID: 137624

File Name: suse_SU-2020-1630-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 6/18/2020

Updated: 5/13/2022

Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

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

CVSS Score Source: CVE-2019-19579

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: E:U/RL:O/RC:C

CVSS Score Source: CVE-2020-11741

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:xen, p-cpe:/a:novell:suse_linux:xen-debugsource, p-cpe:/a:novell:suse_linux:xen-doc-html, p-cpe:/a:novell:suse_linux:xen-libs, p-cpe:/a:novell:suse_linux:xen-libs-debuginfo, p-cpe:/a:novell:suse_linux:xen-tools, p-cpe:/a:novell:suse_linux:xen-tools-debuginfo, p-cpe:/a:novell:suse_linux:xen-tools-domU, p-cpe:/a:novell:suse_linux:xen-tools-domU-debuginfo, cpe:/o:novell:suse_linux:12

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: 6/16/2020

Vulnerability Publication Date: 12/4/2019

Reference Information

CVE: CVE-2019-19577, CVE-2019-19578, CVE-2019-19579, CVE-2019-19580, CVE-2019-19581, CVE-2019-19583, CVE-2020-0543, CVE-2020-7211, CVE-2020-11739, CVE-2020-11740, CVE-2020-11741, CVE-2020-11742