CVE-2020-11742

Upstream information

CVE-2020-11742 at MITRE

Description

An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service because of bad continuation handling in GNTTABOP_copy. Grant table operations are expected to return 0 for success, and a negative number for errors. The fix for CVE-2017-12135 introduced a path through grant copy handling where success may be returned to the caller without any action taken. In particular, the status fields of individual operations are left uninitialised, and may result in errant behaviour in the caller of GNTTABOP_copy. A buggy or malicious guest can construct its grant table in such a way that, when a backend domain tries to copy a grant, it hits the incorrect exit path. This returns success to the caller without doing anything, which may cause crashes or other incorrect behaviour.

SUSE information

Overall state of this security issue: Running

This issue is currently rated as having moderate severity.

CVSS v2 Scores
	National Vulnerability Database
Base Score	2.1
Vector	AV:L/AC:L/Au:N/C:N/I:N/A:P
Access Vector	Local
Access Complexity	Low
Authentication	None
Confidentiality Impact	None
Integrity Impact	None
Availability Impact	Partial

CVSS v3 Scores
	National Vulnerability Database	SUSE
Base Score	5.5	4.3
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Access Vector	Local	Local
Access Complexity	Low	Low
Privileges Required	Low	None
User Interaction	None	None
Scope	Unchanged	Changed
Confidentiality Impact	None	None
Integrity Impact	None	None
Availability Impact	High	Low
CVSSv3 Version	3.1	3.1

SUSE Bugzilla entry: 1169392 [NEW]

SUSE Security Advisories:

SUSE-SU-2020:1124-1, published Tue Apr 28 04:19:52 MDT 2020
SUSE-SU-2020:1138-1, published Wed Apr 29 10:28:02 MDT 2020
SUSE-SU-2020:1139-1, published Wed Apr 29 11:04:22 MDT 2020
SUSE-SU-2020:14444-1, published Tue Aug 4 13:39:14 MDT 2020
SUSE-SU-2020:14448-1, published Tue Aug 11 10:18:13 MDT 2020
SUSE-SU-2020:1630-1, published Tue Jun 16 13:12:19 MDT 2020
SUSE-SU-2020:1634-1, published Wed Jun 17 07:12:54 MDT 2020
SUSE-SU-2020:2234-1, published Thu Aug 13 07:18:25 MDT 2020
openSUSE-SU-2020:0599-1, published Sat, 2 May 2020 00:40:00 +0200 (CEST)

List of released packages

Product(s)	Fixed package version(s)	References
HPE Helion Openstack 8	`xen >= 4.9.4_06-3.62.1` `xen-doc-html >= 4.9.4_06-3.62.1` `xen-libs >= 4.9.4_06-3.62.1` `xen-libs-32bit >= 4.9.4_06-3.62.1` `xen-tools >= 4.9.4_06-3.62.1` `xen-tools-domU >= 4.9.4_06-3.62.1`	Patchnames: HPE-Helion-OpenStack-8-2020-1630
Image SLES15-EC2-CHOST-HVM-BYOS	`xen-libs >= 4.10.4_10-3.31.1` `xen-tools-domU >= 4.10.4_10-3.31.1`
Image SLES15-SP1-CHOST-BYOS-EC2	`xen-libs >= 4.12.2_04-3.15.1` `xen-tools-domU >= 4.12.2_04-3.15.1`
SUSE Enterprise Storage 5	`xen >= 4.9.4_06-3.62.1` `xen-doc-html >= 4.9.4_06-3.62.1` `xen-libs >= 4.9.4_06-3.62.1` `xen-libs-32bit >= 4.9.4_06-3.62.1` `xen-tools >= 4.9.4_06-3.62.1` `xen-tools-domU >= 4.9.4_06-3.62.1`	Patchnames: SUSE-Storage-5-2020-1630
SUSE Linux Enterprise High Performance Computing 15-ESPOS SUSE Linux Enterprise High Performance Computing 15-LTSS	`xen >= 4.10.4_10-3.31.1` `xen-devel >= 4.10.4_10-3.31.1` `xen-libs >= 4.10.4_10-3.31.1` `xen-tools >= 4.10.4_10-3.31.1` `xen-tools-domU >= 4.10.4_10-3.31.1`	Patchnames: SUSE-SLE-Product-HPC-15-2020-1634
SUSE Linux Enterprise Module for Basesystem 15 SP1	`xen >= 4.12.2_04-3.15.1` `xen-libs >= 4.12.2_04-3.15.1` `xen-tools-domU >= 4.12.2_04-3.15.1`	Patchnames: SUSE-SLE-Module-Basesystem-15-SP1-2020-1124
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP1	`xen >= 4.12.2_04-3.15.1` `xen-devel >= 4.12.2_04-3.15.1` `xen-doc-html >= 4.12.2_04-3.15.1` `xen-libs >= 4.12.2_04-3.15.1` `xen-libs-32bit >= 4.12.2_04-3.15.1` `xen-tools >= 4.12.2_04-3.15.1` `xen-tools-domU >= 4.12.2_04-3.15.1`	Patchnames: SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2020-1124
SUSE Linux Enterprise Module for Server Applications 15 SP1	`xen >= 4.12.2_04-3.15.1` `xen-devel >= 4.12.2_04-3.15.1` `xen-tools >= 4.12.2_04-3.15.1`	Patchnames: SUSE-SLE-Module-Server-Applications-15-SP1-2020-1124
SUSE Linux Enterprise Point of Sale 11 SP3	`xen >= 4.2.5_22-45.36.1` `xen-kmp-default >= 4.2.5_22_3.0.101_0.47.106.59-45.36.1` `xen-kmp-pae >= 4.2.5_22_3.0.101_0.47.106.59-45.36.1` `xen-libs >= 4.2.5_22-45.36.1` `xen-tools-domU >= 4.2.5_22-45.36.1`	Patchnames: sleposp3-xen-14448
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT	`xen >= 4.7.6_08-43.64.1` `xen-doc-html >= 4.7.6_08-43.64.1` `xen-libs >= 4.7.6_08-43.64.1` `xen-libs-32bit >= 4.7.6_08-43.64.1` `xen-tools >= 4.7.6_08-43.64.1` `xen-tools-domU >= 4.7.6_08-43.64.1`	Patchnames: SUSE-SLE-POS-12-SP2-CLIENT-2020-2234
SUSE Linux Enterprise Server 11 SP4-LTSS SUSE Linux Enterprise Server for SAP Applications 11 SP4-LTSS	`xen >= 4.4.4_42-61.52.1` `xen-doc-html >= 4.4.4_42-61.52.1` `xen-kmp-default >= 4.4.4_42_3.0.101_108.114-61.52.1` `xen-kmp-pae >= 4.4.4_42_3.0.101_108.114-61.52.1` `xen-libs >= 4.4.4_42-61.52.1` `xen-libs-32bit >= 4.4.4_42-61.52.1` `xen-tools >= 4.4.4_42-61.52.1` `xen-tools-domU >= 4.4.4_42-61.52.1`	Patchnames: slessp4-xen-14444
SUSE Linux Enterprise Server 12 SP2-BCL SUSE Linux Enterprise Server for SAP Applications 12 SP2-BCL	`xen >= 4.7.6_08-43.64.1` `xen-doc-html >= 4.7.6_08-43.64.1` `xen-libs >= 4.7.6_08-43.64.1` `xen-libs-32bit >= 4.7.6_08-43.64.1` `xen-tools >= 4.7.6_08-43.64.1` `xen-tools-domU >= 4.7.6_08-43.64.1`	Patchnames: SUSE-SLE-SERVER-12-SP2-BCL-2020-2234
SUSE Linux Enterprise Server 12 SP2-ESPOS SUSE Linux Enterprise Server for SAP Applications 12 SP2-ESPOS	`xen >= 4.7.6_08-43.64.1` `xen-doc-html >= 4.7.6_08-43.64.1` `xen-libs >= 4.7.6_08-43.64.1` `xen-libs-32bit >= 4.7.6_08-43.64.1` `xen-tools >= 4.7.6_08-43.64.1` `xen-tools-domU >= 4.7.6_08-43.64.1`	Patchnames: SUSE-SLE-SERVER-12-SP2-ESPOS-2020-2234
SUSE Linux Enterprise Server 12 SP2-LTSS SUSE Linux Enterprise Server for SAP Applications 12 SP2-LTSS	`xen >= 4.7.6_08-43.64.1` `xen-doc-html >= 4.7.6_08-43.64.1` `xen-libs >= 4.7.6_08-43.64.1` `xen-libs-32bit >= 4.7.6_08-43.64.1` `xen-tools >= 4.7.6_08-43.64.1` `xen-tools-domU >= 4.7.6_08-43.64.1`	Patchnames: SUSE-SLE-SERVER-12-SP2-2020-2234
SUSE Linux Enterprise Server 12 SP3-BCL SUSE Linux Enterprise Server for SAP Applications 12 SP3-BCL	`xen >= 4.9.4_06-3.62.1` `xen-doc-html >= 4.9.4_06-3.62.1` `xen-libs >= 4.9.4_06-3.62.1` `xen-libs-32bit >= 4.9.4_06-3.62.1` `xen-tools >= 4.9.4_06-3.62.1` `xen-tools-domU >= 4.9.4_06-3.62.1`	Patchnames: SUSE-SLE-SERVER-12-SP3-BCL-2020-1630
SUSE Linux Enterprise Server 12 SP3-ESPOS SUSE Linux Enterprise Server for SAP Applications 12 SP3-ESPOS	`xen >= 4.9.4_06-3.62.1` `xen-doc-html >= 4.9.4_06-3.62.1` `xen-libs >= 4.9.4_06-3.62.1` `xen-libs-32bit >= 4.9.4_06-3.62.1` `xen-tools >= 4.9.4_06-3.62.1` `xen-tools-domU >= 4.9.4_06-3.62.1`	Patchnames: SUSE-SLE-SERVER-12-SP3-ESPOS-2020-1630
SUSE Linux Enterprise Server 12 SP3-LTSS SUSE Linux Enterprise Server for SAP Applications 12 SP3-LTSS	`xen >= 4.9.4_06-3.62.1` `xen-doc-html >= 4.9.4_06-3.62.1` `xen-libs >= 4.9.4_06-3.62.1` `xen-libs-32bit >= 4.9.4_06-3.62.1` `xen-tools >= 4.9.4_06-3.62.1` `xen-tools-domU >= 4.9.4_06-3.62.1`	Patchnames: SUSE-SLE-SERVER-12-SP3-2020-1630
SUSE Linux Enterprise Server 12 SP4 SUSE Linux Enterprise Server for SAP Applications 12 SP4	`xen >= 4.11.3_04-2.23.1` `xen-doc-html >= 4.11.3_04-2.23.1` `xen-libs >= 4.11.3_04-2.23.1` `xen-libs-32bit >= 4.11.3_04-2.23.1` `xen-tools >= 4.11.3_04-2.23.1` `xen-tools-domU >= 4.11.3_04-2.23.1`	Patchnames: SUSE-SLE-SERVER-12-SP4-2020-1138
SUSE Linux Enterprise Server 12 SP5 SUSE Linux Enterprise Server for SAP Applications 12 SP5	`xen >= 4.12.2_04-3.11.1` `xen-doc-html >= 4.12.2_04-3.11.1` `xen-libs >= 4.12.2_04-3.11.1` `xen-libs-32bit >= 4.12.2_04-3.11.1` `xen-tools >= 4.12.2_04-3.11.1` `xen-tools-domU >= 4.12.2_04-3.11.1`	Patchnames: SUSE-SLE-SERVER-12-SP5-2020-1139
SUSE Linux Enterprise Server 15-LTSS	`xen >= 4.10.4_10-3.31.1` `xen-devel >= 4.10.4_10-3.31.1` `xen-libs >= 4.10.4_10-3.31.1` `xen-tools >= 4.10.4_10-3.31.1` `xen-tools-domU >= 4.10.4_10-3.31.1`	Patchnames: SUSE-SLE-Product-SLES-15-2020-1634
SUSE Linux Enterprise Server for SAP Applications 12 SP2	`xen >= 4.7.6_08-43.64.1` `xen-doc-html >= 4.7.6_08-43.64.1` `xen-libs >= 4.7.6_08-43.64.1` `xen-libs-32bit >= 4.7.6_08-43.64.1` `xen-tools >= 4.7.6_08-43.64.1` `xen-tools-domU >= 4.7.6_08-43.64.1`	Patchnames: SUSE-SLE-SAP-12-SP2-2020-2234
SUSE Linux Enterprise Server for SAP Applications 12 SP3	`xen >= 4.9.4_06-3.62.1` `xen-doc-html >= 4.9.4_06-3.62.1` `xen-libs >= 4.9.4_06-3.62.1` `xen-libs-32bit >= 4.9.4_06-3.62.1` `xen-tools >= 4.9.4_06-3.62.1` `xen-tools-domU >= 4.9.4_06-3.62.1`	Patchnames: SUSE-SLE-SAP-12-SP3-2020-1630
SUSE Linux Enterprise Server for SAP Applications 15	`xen >= 4.10.4_10-3.31.1` `xen-devel >= 4.10.4_10-3.31.1` `xen-libs >= 4.10.4_10-3.31.1` `xen-tools >= 4.10.4_10-3.31.1` `xen-tools-domU >= 4.10.4_10-3.31.1`	Patchnames: SUSE-SLE-Product-SLES_SAP-15-2020-1634
SUSE Linux Enterprise Software Development Kit 12 SP4	`xen >= 4.11.3_04-2.23.1` `xen-devel >= 4.11.3_04-2.23.1`	Patchnames: SUSE-SLE-SDK-12-SP4-2020-1138
SUSE Linux Enterprise Software Development Kit 12 SP5	`xen >= 4.12.2_04-3.11.1` `xen-devel >= 4.12.2_04-3.11.1`	Patchnames: SUSE-SLE-SDK-12-SP5-2020-1139
SUSE OpenStack Cloud 7	`xen >= 4.7.6_08-43.64.1` `xen-doc-html >= 4.7.6_08-43.64.1` `xen-libs >= 4.7.6_08-43.64.1` `xen-libs-32bit >= 4.7.6_08-43.64.1` `xen-tools >= 4.7.6_08-43.64.1` `xen-tools-domU >= 4.7.6_08-43.64.1`	Patchnames: SUSE-OpenStack-Cloud-7-2020-2234
SUSE OpenStack Cloud 8	`xen >= 4.9.4_06-3.62.1` `xen-doc-html >= 4.9.4_06-3.62.1` `xen-libs >= 4.9.4_06-3.62.1` `xen-libs-32bit >= 4.9.4_06-3.62.1` `xen-tools >= 4.9.4_06-3.62.1` `xen-tools-domU >= 4.9.4_06-3.62.1`	Patchnames: SUSE-OpenStack-Cloud-8-2020-1630
SUSE OpenStack Cloud Crowbar 8	`xen >= 4.9.4_06-3.62.1` `xen-doc-html >= 4.9.4_06-3.62.1` `xen-libs >= 4.9.4_06-3.62.1` `xen-libs-32bit >= 4.9.4_06-3.62.1` `xen-tools >= 4.9.4_06-3.62.1` `xen-tools-domU >= 4.9.4_06-3.62.1`	Patchnames: SUSE-OpenStack-Cloud-Crowbar-8-2020-1630
openSUSE Leap 15.1	`xen >= 4.12.2_04-lp151.2.15.1` `xen-debugsource >= 4.12.2_04-lp151.2.15.1` `xen-devel >= 4.12.2_04-lp151.2.15.1` `xen-doc-html >= 4.12.2_04-lp151.2.15.1` `xen-libs >= 4.12.2_04-lp151.2.15.1` `xen-libs-32bit >= 4.12.2_04-lp151.2.15.1` `xen-libs-32bit-debuginfo >= 4.12.2_04-lp151.2.15.1` `xen-libs-debuginfo >= 4.12.2_04-lp151.2.15.1` `xen-tools >= 4.12.2_04-lp151.2.15.1` `xen-tools-debuginfo >= 4.12.2_04-lp151.2.15.1` `xen-tools-domU >= 4.12.2_04-lp151.2.15.1` `xen-tools-domU-debuginfo >= 4.12.2_04-lp151.2.15.1`	Patchnames: openSUSE-2020-599

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s)	Source package	State
SUSE CaaS Platform 3.0	xen	Affected
SUSE Container as a Service Platform 1.0	xen	Affected
SUSE Container as a Service Platform 2.0	xen	Affected
SUSE Linux Enterprise 15-SP1 Module for Basesystem	xen	Released
SUSE Linux Enterprise 15-SP1 Module for Server Applications	xen	Released
SUSE Linux Enterprise High Performance Computing 12 SP4	xen	Released
SUSE Linux Enterprise High Performance Computing 12 SP5	xen	Released
SUSE Linux Enterprise High Performance Computing 15 LTSS	xen	Released
SUSE Linux Enterprise Server 11 SP1	xen	Affected
SUSE Linux Enterprise Server 11 SP3	xen	Released
SUSE Linux Enterprise Server 11 SP4 LTSS	xen	Released
SUSE Linux Enterprise Server 12 SP1 LTSS	xen	Affected
SUSE Linux Enterprise Server 12 SP2 BCL	xen	Released
SUSE Linux Enterprise Server 12 SP2 LTSS	xen	Released
SUSE Linux Enterprise Server 12 SP3 BCL	xen	Released
SUSE Linux Enterprise Server 12 SP3 LTSS	xen	Released
SUSE Linux Enterprise Server 12 SP4	xen	Released
SUSE Linux Enterprise Server 12 SP5	xen	Released
SUSE Linux Enterprise Server ESPOS 15	xen	Released
SUSE Linux Enterprise Server for SAP Applications 12 SP2	xen	Released
SUSE Linux Enterprise Server for SAP Applications 12 SP3	xen	Released
SUSE Linux Enterprise Server for SAP Applications 12 SP4	xen	Released
SUSE Linux Enterprise Server for SAP Applications 12 SP5	xen	Released
SUSE Linux Enterprise Software Development Kit 12 SP4	xen	Released
SUSE Linux Enterprise Software Development Kit 12 SP5	xen	Released