CVE-2019-19577

Upstream information

CVE-2019-19577 at MITRE

Description

An issue was discovered in Xen through 4.12.x allowing x86 AMD HVM guest OS users to cause a denial of service or possibly gain privileges by triggering data-structure access during pagetable-height updates. When running on AMD systems with an IOMMU, Xen attempted to dynamically adapt the number of levels of pagetables (the pagetable height) in the IOMMU according to the guest's address space size. The code to select and update the height had several bugs. Notably, the update was done without taking a lock which is necessary for safe operation. A malicious guest administrator can cause Xen to access data structures while they are being modified, causing Xen to crash. Privilege escalation is thought to be very difficult but cannot be ruled out. Additionally, there is a potential memory leak of 4kb per guest boot, under memory pressure. Only Xen on AMD CPUs is vulnerable. Xen running on Intel CPUs is not vulnerable. ARM systems are not vulnerable. Only systems where guests are given direct access to physical devices are vulnerable. Systems which do not use PCI pass-through are not vulnerable. Only HVM guests can exploit the vulnerability. PV and PVH guests cannot. All versions of Xen with IOMMU support are vulnerable.

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SUSE information

Overall state of this security issue: Running

This issue is currently rated as having important severity.

CVSS v2 Scores

	National Vulnerability Database
Base Score	7.2
Vector	AV:L/AC:L/Au:N/C:C/I:C/A:C
Access Vector	Local
Access Complexity	Low
Authentication	None
Confidentiality Impact	Complete
Integrity Impact	Complete
Availability Impact	Complete

CVSS v3 Scores

	National Vulnerability Database
Base Score	7.2
Vector	CVSS:3.1/AV:P/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Access Vector	Physical
Access Complexity	Low
Privileges Required	High
User Interaction	None
Scope	Changed
Confidentiality Impact	High
Integrity Impact	High
Availability Impact	High
CVSSv3 Version	3.1

SUSE Bugzilla entry: 1158007 [NEW]

SUSE Security Advisories:

• SUSE-SU-2019:3296-1, published Fri Dec 13 16:13:50 MST 2019
• SUSE-SU-2019:3297-1, published Fri Dec 13 16:10:48 MST 2019
• SUSE-SU-2019:3309-1, published Mon Dec 16 10:15:00 MST 2019
• SUSE-SU-2019:3310-1, published Mon Dec 16 10:13:14 MST 2019
• SUSE-SU-2019:3338-1, published Wed Dec 18 16:12:00 MST 2019
• SUSE-SU-2020:0334-1, published Thu Feb 6 07:14:05 MST 2020
• SUSE-SU-2020:0388-1, published Mon Feb 17 10:11:14 MST 2020

List of released packages

Product(s)	Fixed package version(s)	References
HPE Helion Openstack 8	xen >= 4.9.4_06-3.59.1 xen-doc-html >= 4.9.4_06-3.59.1 xen-libs >= 4.9.4_06-3.59.1 xen-libs-32bit >= 4.9.4_06-3.59.1 xen-tools >= 4.9.4_06-3.59.1 xen-tools-domU >= 4.9.4_06-3.59.1	Patchnames: HPE-Helion-OpenStack-8-2019-3297
SUSE CaaS Platform 3.0	xen >= 4.9.4_06-3.59.1 xen-libs >= 4.9.4_06-3.59.1 xen-tools-domU >= 4.9.4_06-3.59.1	Patchnames: SUSE-CAASP-3.0-2019-3297
SUSE Enterprise Storage 5	xen >= 4.9.4_06-3.59.1 xen-doc-html >= 4.9.4_06-3.59.1 xen-libs >= 4.9.4_06-3.59.1 xen-libs-32bit >= 4.9.4_06-3.59.1 xen-tools >= 4.9.4_06-3.59.1 xen-tools-domU >= 4.9.4_06-3.59.1	Patchnames: SUSE-Storage-5-2019-3297
SUSE Linux Enterprise Desktop 12 SP4	xen >= 4.11.3_02-2.20.1 xen-libs >= 4.11.3_02-2.20.1 xen-libs-32bit >= 4.11.3_02-2.20.1	Patchnames: SUSE-SLE-DESKTOP-12-SP4-2019-3310
SUSE Linux Enterprise Module for Basesystem 15	xen >= 4.10.4_08-3.28.1 xen-libs >= 4.10.4_08-3.28.1 xen-tools-domU >= 4.10.4_08-3.28.1	Patchnames: SUSE-SLE-Module-Basesystem-15-2019-3309
SUSE Linux Enterprise Module for Basesystem 15 SP1	xen >= 4.12.1_06-3.9.1 xen-libs >= 4.12.1_06-3.9.1 xen-tools-domU >= 4.12.1_06-3.9.1	Patchnames: SUSE-SLE-Module-Basesystem-15-SP1-2019-3338
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP1	xen >= 4.12.1_06-3.9.1 xen-devel >= 4.12.1_06-3.9.1 xen-doc-html >= 4.12.1_06-3.9.1 xen-libs >= 4.12.1_06-3.9.1 xen-libs-32bit >= 4.12.1_06-3.9.1 xen-tools >= 4.12.1_06-3.9.1 xen-tools-domU >= 4.12.1_06-3.9.1	Patchnames: SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2019-3338
SUSE Linux Enterprise Module for Server Applications 15	xen >= 4.10.4_08-3.28.1 xen-devel >= 4.10.4_08-3.28.1 xen-tools >= 4.10.4_08-3.28.1	Patchnames: SUSE-SLE-Module-Server-Applications-15-2019-3309
SUSE Linux Enterprise Module for Server Applications 15 SP1	xen >= 4.12.1_06-3.9.1 xen-devel >= 4.12.1_06-3.9.1 xen-tools >= 4.12.1_06-3.9.1	Patchnames: SUSE-SLE-Module-Server-Applications-15-SP1-2019-3338
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT	xen >= 4.7.6_06-43.59.1 xen-doc-html >= 4.7.6_06-43.59.1 xen-libs >= 4.7.6_06-43.59.1 xen-libs-32bit >= 4.7.6_06-43.59.1 xen-tools >= 4.7.6_06-43.59.1 xen-tools-domU >= 4.7.6_06-43.59.1	Patchnames: SUSE-SLE-POS-12-SP2-CLIENT-2020-334
SUSE Linux Enterprise Server 12 SP1-LTSS	xen >= 4.5.5_28-22.64.1 xen-doc-html >= 4.5.5_28-22.64.1 xen-kmp-default >= 4.5.5_28_k3.12.74_60.64.124-22.64.1 xen-libs >= 4.5.5_28-22.64.1 xen-libs-32bit >= 4.5.5_28-22.64.1 xen-tools >= 4.5.5_28-22.64.1 xen-tools-domU >= 4.5.5_28-22.64.1	Patchnames: SUSE-SLE-SERVER-12-SP1-2020-388
SUSE Linux Enterprise Server 12 SP2-BCL	xen >= 4.7.6_06-43.59.1 xen-doc-html >= 4.7.6_06-43.59.1 xen-libs >= 4.7.6_06-43.59.1 xen-libs-32bit >= 4.7.6_06-43.59.1 xen-tools >= 4.7.6_06-43.59.1 xen-tools-domU >= 4.7.6_06-43.59.1	Patchnames: SUSE-SLE-SERVER-12-SP2-BCL-2020-334
SUSE Linux Enterprise Server 12 SP2-ESPOS	xen >= 4.7.6_06-43.59.1 xen-doc-html >= 4.7.6_06-43.59.1 xen-libs >= 4.7.6_06-43.59.1 xen-libs-32bit >= 4.7.6_06-43.59.1 xen-tools >= 4.7.6_06-43.59.1 xen-tools-domU >= 4.7.6_06-43.59.1	Patchnames: SUSE-SLE-SERVER-12-SP2-ESPOS-2020-334
SUSE Linux Enterprise Server 12 SP2-LTSS	xen >= 4.7.6_06-43.59.1 xen-doc-html >= 4.7.6_06-43.59.1 xen-libs >= 4.7.6_06-43.59.1 xen-libs-32bit >= 4.7.6_06-43.59.1 xen-tools >= 4.7.6_06-43.59.1 xen-tools-domU >= 4.7.6_06-43.59.1	Patchnames: SUSE-SLE-SERVER-12-SP2-2020-334
SUSE Linux Enterprise Server 12 SP3-BCL	xen >= 4.9.4_06-3.59.1 xen-doc-html >= 4.9.4_06-3.59.1 xen-libs >= 4.9.4_06-3.59.1 xen-libs-32bit >= 4.9.4_06-3.59.1 xen-tools >= 4.9.4_06-3.59.1 xen-tools-domU >= 4.9.4_06-3.59.1	Patchnames: SUSE-SLE-SERVER-12-SP3-BCL-2019-3297
SUSE Linux Enterprise Server 12 SP3-ESPOS	xen >= 4.9.4_06-3.59.1 xen-doc-html >= 4.9.4_06-3.59.1 xen-libs >= 4.9.4_06-3.59.1 xen-libs-32bit >= 4.9.4_06-3.59.1 xen-tools >= 4.9.4_06-3.59.1 xen-tools-domU >= 4.9.4_06-3.59.1	Patchnames: SUSE-SLE-SERVER-12-SP3-ESPOS-2019-3297
SUSE Linux Enterprise Server 12 SP3-LTSS	xen >= 4.9.4_06-3.59.1 xen-doc-html >= 4.9.4_06-3.59.1 xen-libs >= 4.9.4_06-3.59.1 xen-libs-32bit >= 4.9.4_06-3.59.1 xen-tools >= 4.9.4_06-3.59.1 xen-tools-domU >= 4.9.4_06-3.59.1	Patchnames: SUSE-SLE-SERVER-12-SP3-2019-3297
SUSE Linux Enterprise Server 12 SP4	xen >= 4.11.3_02-2.20.1 xen-doc-html >= 4.11.3_02-2.20.1 xen-libs >= 4.11.3_02-2.20.1 xen-libs-32bit >= 4.11.3_02-2.20.1 xen-tools >= 4.11.3_02-2.20.1 xen-tools-domU >= 4.11.3_02-2.20.1	Patchnames: SUSE-SLE-SERVER-12-SP4-2019-3310
SUSE Linux Enterprise Server 12 SP5	xen >= 4.12.1_10-3.8.1 xen-doc-html >= 4.12.1_10-3.8.1 xen-libs >= 4.12.1_10-3.8.1 xen-libs-32bit >= 4.12.1_10-3.8.1 xen-tools >= 4.12.1_10-3.8.1 xen-tools-domU >= 4.12.1_10-3.8.1	Patchnames: SUSE-SLE-SERVER-12-SP5-2019-3296
SUSE Linux Enterprise Server for SAP Applications 12 SP1	xen >= 4.5.5_28-22.64.1 xen-doc-html >= 4.5.5_28-22.64.1 xen-kmp-default >= 4.5.5_28_k3.12.74_60.64.124-22.64.1 xen-libs >= 4.5.5_28-22.64.1 xen-libs-32bit >= 4.5.5_28-22.64.1 xen-tools >= 4.5.5_28-22.64.1 xen-tools-domU >= 4.5.5_28-22.64.1	Patchnames: SUSE-SLE-SAP-12-SP1-2020-388
SUSE Linux Enterprise Server for SAP Applications 12 SP1-LTSS	xen >= 4.5.5_28-22.64.1 xen-doc-html >= 4.5.5_28-22.64.1 xen-kmp-default >= 4.5.5_28_k3.12.74_60.64.124-22.64.1 xen-libs >= 4.5.5_28-22.64.1 xen-libs-32bit >= 4.5.5_28-22.64.1 xen-tools >= 4.5.5_28-22.64.1 xen-tools-domU >= 4.5.5_28-22.64.1	Patchnames: SUSE-SLE-SERVER-12-SP1-2020-388
SUSE Linux Enterprise Server for SAP Applications 12 SP2	xen >= 4.7.6_06-43.59.1 xen-doc-html >= 4.7.6_06-43.59.1 xen-libs >= 4.7.6_06-43.59.1 xen-libs-32bit >= 4.7.6_06-43.59.1 xen-tools >= 4.7.6_06-43.59.1 xen-tools-domU >= 4.7.6_06-43.59.1	Patchnames: SUSE-SLE-SAP-12-SP2-2020-334
SUSE Linux Enterprise Server for SAP Applications 12 SP2-BCL	xen >= 4.7.6_06-43.59.1 xen-doc-html >= 4.7.6_06-43.59.1 xen-libs >= 4.7.6_06-43.59.1 xen-libs-32bit >= 4.7.6_06-43.59.1 xen-tools >= 4.7.6_06-43.59.1 xen-tools-domU >= 4.7.6_06-43.59.1	Patchnames: SUSE-SLE-SERVER-12-SP2-BCL-2020-334
SUSE Linux Enterprise Server for SAP Applications 12 SP2-ESPOS	xen >= 4.7.6_06-43.59.1 xen-doc-html >= 4.7.6_06-43.59.1 xen-libs >= 4.7.6_06-43.59.1 xen-libs-32bit >= 4.7.6_06-43.59.1 xen-tools >= 4.7.6_06-43.59.1 xen-tools-domU >= 4.7.6_06-43.59.1	Patchnames: SUSE-SLE-SERVER-12-SP2-ESPOS-2020-334
SUSE Linux Enterprise Server for SAP Applications 12 SP2-LTSS	xen >= 4.7.6_06-43.59.1 xen-doc-html >= 4.7.6_06-43.59.1 xen-libs >= 4.7.6_06-43.59.1 xen-libs-32bit >= 4.7.6_06-43.59.1 xen-tools >= 4.7.6_06-43.59.1 xen-tools-domU >= 4.7.6_06-43.59.1	Patchnames: SUSE-SLE-SERVER-12-SP2-2020-334
SUSE Linux Enterprise Server for SAP Applications 12 SP3	xen >= 4.9.4_06-3.59.1 xen-doc-html >= 4.9.4_06-3.59.1 xen-libs >= 4.9.4_06-3.59.1 xen-libs-32bit >= 4.9.4_06-3.59.1 xen-tools >= 4.9.4_06-3.59.1 xen-tools-domU >= 4.9.4_06-3.59.1	Patchnames: SUSE-SLE-SAP-12-SP3-2019-3297
SUSE Linux Enterprise Server for SAP Applications 12 SP3-BCL	xen >= 4.9.4_06-3.59.1 xen-doc-html >= 4.9.4_06-3.59.1 xen-libs >= 4.9.4_06-3.59.1 xen-libs-32bit >= 4.9.4_06-3.59.1 xen-tools >= 4.9.4_06-3.59.1 xen-tools-domU >= 4.9.4_06-3.59.1	Patchnames: SUSE-SLE-SERVER-12-SP3-BCL-2019-3297
SUSE Linux Enterprise Server for SAP Applications 12 SP3-ESPOS	xen >= 4.9.4_06-3.59.1 xen-doc-html >= 4.9.4_06-3.59.1 xen-libs >= 4.9.4_06-3.59.1 xen-libs-32bit >= 4.9.4_06-3.59.1 xen-tools >= 4.9.4_06-3.59.1 xen-tools-domU >= 4.9.4_06-3.59.1	Patchnames: SUSE-SLE-SERVER-12-SP3-ESPOS-2019-3297
SUSE Linux Enterprise Server for SAP Applications 12 SP3-LTSS	xen >= 4.9.4_06-3.59.1 xen-doc-html >= 4.9.4_06-3.59.1 xen-libs >= 4.9.4_06-3.59.1 xen-libs-32bit >= 4.9.4_06-3.59.1 xen-tools >= 4.9.4_06-3.59.1 xen-tools-domU >= 4.9.4_06-3.59.1	Patchnames: SUSE-SLE-SERVER-12-SP3-2019-3297
SUSE Linux Enterprise Server for SAP Applications 12 SP4	xen >= 4.11.3_02-2.20.1 xen-doc-html >= 4.11.3_02-2.20.1 xen-libs >= 4.11.3_02-2.20.1 xen-libs-32bit >= 4.11.3_02-2.20.1 xen-tools >= 4.11.3_02-2.20.1 xen-tools-domU >= 4.11.3_02-2.20.1	Patchnames: SUSE-SLE-SERVER-12-SP4-2019-3310
SUSE Linux Enterprise Server for SAP Applications 12 SP5	xen >= 4.12.1_10-3.8.1 xen-doc-html >= 4.12.1_10-3.8.1 xen-libs >= 4.12.1_10-3.8.1 xen-libs-32bit >= 4.12.1_10-3.8.1 xen-tools >= 4.12.1_10-3.8.1 xen-tools-domU >= 4.12.1_10-3.8.1	Patchnames: SUSE-SLE-SERVER-12-SP5-2019-3296
SUSE Linux Enterprise Software Development Kit 12 SP4	xen >= 4.11.3_02-2.20.1 xen-devel >= 4.11.3_02-2.20.1	Patchnames: SUSE-SLE-SDK-12-SP4-2019-3310
SUSE Linux Enterprise Software Development Kit 12 SP5	xen >= 4.12.1_10-3.8.1 xen-devel >= 4.12.1_10-3.8.1	Patchnames: SUSE-SLE-SDK-12-SP5-2019-3296
SUSE OpenStack Cloud 7	xen >= 4.7.6_06-43.59.1 xen-doc-html >= 4.7.6_06-43.59.1 xen-libs >= 4.7.6_06-43.59.1 xen-libs-32bit >= 4.7.6_06-43.59.1 xen-tools >= 4.7.6_06-43.59.1 xen-tools-domU >= 4.7.6_06-43.59.1	Patchnames: SUSE-OpenStack-Cloud-7-2020-334
SUSE OpenStack Cloud 8	xen >= 4.9.4_06-3.59.1 xen-doc-html >= 4.9.4_06-3.59.1 xen-libs >= 4.9.4_06-3.59.1 xen-libs-32bit >= 4.9.4_06-3.59.1 xen-tools >= 4.9.4_06-3.59.1 xen-tools-domU >= 4.9.4_06-3.59.1	Patchnames: SUSE-OpenStack-Cloud-8-2019-3297
SUSE OpenStack Cloud Crowbar 8	xen >= 4.9.4_06-3.59.1 xen-doc-html >= 4.9.4_06-3.59.1 xen-libs >= 4.9.4_06-3.59.1 xen-libs-32bit >= 4.9.4_06-3.59.1 xen-tools >= 4.9.4_06-3.59.1 xen-tools-domU >= 4.9.4_06-3.59.1	Patchnames: SUSE-OpenStack-Cloud-Crowbar-8-2019-3297
openSUSE Leap 15.1	xen >= 4.12.1_06-lp151.2.9.1 xen-debugsource >= 4.12.1_06-lp151.2.9.1 xen-devel >= 4.12.1_06-lp151.2.9.1 xen-doc-html >= 4.12.1_06-lp151.2.9.1 xen-libs >= 4.12.1_06-lp151.2.9.1 xen-libs-32bit >= 4.12.1_06-lp151.2.9.1 xen-libs-32bit-debuginfo >= 4.12.1_06-lp151.2.9.1 xen-libs-debuginfo >= 4.12.1_06-lp151.2.9.1 xen-tools >= 4.12.1_06-lp151.2.9.1 xen-tools-debuginfo >= 4.12.1_06-lp151.2.9.1 xen-tools-domU >= 4.12.1_06-lp151.2.9.1 xen-tools-domU-debuginfo >= 4.12.1_06-lp151.2.9.1	Patchnames: openSUSE-2020-11

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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
CaaS Platform 1.0	xen	Analysis
CaaS Platform 2.0	xen	Analysis
CaaS Platform 3.0	xen	Released
SUSE Linux Enterprise Desktop 12 SP4	xen	Released
SUSE Linux Enterprise High Performance Computing 12	xen	Released
SUSE Linux Enterprise Module for Basesystem 15 GA	xen	Released
SUSE Linux Enterprise Module for Basesystem 15 SP1	xen	Released
SUSE Linux Enterprise Module for Server Applications 15 GA	xen	Released
SUSE Linux Enterprise Module for Server Applications 15 SP1	xen	Released
SUSE Linux Enterprise SDK 12 SP4	xen	Released
SUSE Linux Enterprise SDK 12 SP5	xen	Released
SUSE Linux Enterprise Server 11 SP4 LTSS	xen	Analysis
SUSE Linux Enterprise Server 12 SP1 LTSS	xen	Released
SUSE Linux Enterprise Server 12 SP2 LTSS	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 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