Upstream information

CVE-2020-25595 at MITRE

Description

An issue was discovered in Xen through 4.14.x. The PCI passthrough code improperly uses register data. Code paths in Xen's MSI handling have been identified that act on unsanitized values read back from device hardware registers. While devices strictly compliant with PCI specifications shouldn't be able to affect these registers, experience shows that it's very common for devices to have out-of-spec "backdoor" operations that can affect the result of these reads. A not fully trusted guest may be able to crash Xen, leading to a Denial of Service (DoS) for the entire system. Privilege escalation and information leaks cannot be excluded. All versions of Xen supporting PCI passthrough are affected. Only x86 systems are vulnerable. Arm systems are not vulnerable. Only guests with passed through PCI devices may be able to leverage the vulnerability. Only systems passing through devices with out-of-spec ("backdoor") functionality can cause issues. Experience shows that such out-of-spec functionality is common; unless you have reason to believe that your device does not have such functionality, it's better to assume that it does.

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 6.1
Vector AV:L/AC:L/Au:N/C:P/I:P/A:C
Access Vector Local
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Complete
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 7.8 7.8
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Access Vector Local Local
Access Complexity Low High
Privileges Required Low Low
User Interaction None None
Scope Unchanged Changed
Confidentiality Impact High High
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1176344 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
HPE Helion Openstack 8
  • xen >= 4.9.4_12-3.74.1
  • xen-doc-html >= 4.9.4_12-3.74.1
  • xen-libs >= 4.9.4_12-3.74.1
  • xen-libs-32bit >= 4.9.4_12-3.74.1
  • xen-tools >= 4.9.4_12-3.74.1
  • xen-tools-domU >= 4.9.4_12-3.74.1
Patchnames:
HPE-Helion-OpenStack-8-2020-2787
Image SLES15-EC2-CHOST-HVM-BYOS
  • xen-libs >= 4.10.4_16-3.41.1
  • xen-tools-domU >= 4.10.4_16-3.41.1
Image SLES15-SP1-CHOST-BYOS-EC2
  • xen-libs >= 4.12.3_08-3.28.1
  • xen-tools-domU >= 4.12.3_08-3.28.1
Image SLES15-SP2-CHOST-BYOS-Ali
Image SLES15-SP2-CHOST-BYOS-Azure
Image SLES15-SP2-CHOST-BYOS-GCE
Image SLES15-SP2-CHOST-BYOS-OpenStack
  • xen-libs >= 4.13.1_08-3.10.1
Image SLES15-SP2-CHOST-BYOS-EC2
  • xen-libs >= 4.13.1_08-3.10.1
  • xen-tools-domU >= 4.13.1_08-3.10.1
SUSE Enterprise Storage 5
  • xen >= 4.9.4_12-3.74.1
  • xen-doc-html >= 4.9.4_12-3.74.1
  • xen-libs >= 4.9.4_12-3.74.1
  • xen-libs-32bit >= 4.9.4_12-3.74.1
  • xen-tools >= 4.9.4_12-3.74.1
  • xen-tools-domU >= 4.9.4_12-3.74.1
Patchnames:
SUSE-Storage-5-2020-2787
SUSE Linux Enterprise High Performance Computing 15-ESPOS
SUSE Linux Enterprise High Performance Computing 15-LTSS
  • xen >= 4.10.4_16-3.41.1
  • xen-devel >= 4.10.4_16-3.41.1
  • xen-libs >= 4.10.4_16-3.41.1
  • xen-tools >= 4.10.4_16-3.41.1
  • xen-tools-domU >= 4.10.4_16-3.41.1
Patchnames:
SUSE-SLE-Product-HPC-15-2020-2789
SUSE Linux Enterprise Module for Basesystem 15 SP1
  • xen >= 4.12.3_08-3.28.1
  • xen-libs >= 4.12.3_08-3.28.1
  • xen-tools-domU >= 4.12.3_08-3.28.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-SP1-2020-2790
SUSE Linux Enterprise Module for Basesystem 15 SP2
  • xen >= 4.13.1_08-3.10.1
  • xen-libs >= 4.13.1_08-3.10.1
  • xen-tools-domU >= 4.13.1_08-3.10.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-SP2-2020-2791
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP1
  • xen >= 4.12.3_08-3.28.1
  • xen-devel >= 4.12.3_08-3.28.1
  • xen-doc-html >= 4.12.3_08-3.28.1
  • xen-libs >= 4.12.3_08-3.28.1
  • xen-libs-32bit >= 4.12.3_08-3.28.1
  • xen-tools >= 4.12.3_08-3.28.1
  • xen-tools-domU >= 4.12.3_08-3.28.1
Patchnames:
SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2020-2790
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP2
  • xen >= 4.13.1_08-3.10.1
  • xen-devel >= 4.13.1_08-3.10.1
  • xen-doc-html >= 4.13.1_08-3.10.1
  • xen-libs >= 4.13.1_08-3.10.1
  • xen-libs-32bit >= 4.13.1_08-3.10.1
  • xen-tools >= 4.13.1_08-3.10.1
  • xen-tools-domU >= 4.13.1_08-3.10.1
Patchnames:
SUSE-SLE-Module-Development-Tools-OBS-15-SP2-2020-2791
SUSE Linux Enterprise Module for Server Applications 15 SP1
  • xen >= 4.12.3_08-3.28.1
  • xen-devel >= 4.12.3_08-3.28.1
  • xen-tools >= 4.12.3_08-3.28.1
Patchnames:
SUSE-SLE-Module-Server-Applications-15-SP1-2020-2790
SUSE Linux Enterprise Module for Server Applications 15 SP2
  • xen >= 4.13.1_08-3.10.1
  • xen-devel >= 4.13.1_08-3.10.1
  • xen-tools >= 4.13.1_08-3.10.1
  • xen-tools-xendomains-wait-disk >= 4.13.1_08-3.10.1
Patchnames:
SUSE-SLE-Module-Server-Applications-15-SP2-2020-2791
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT
  • xen >= 4.7.6_10-43.67.1
  • xen-doc-html >= 4.7.6_10-43.67.1
  • xen-libs >= 4.7.6_10-43.67.1
  • xen-libs-32bit >= 4.7.6_10-43.67.1
  • xen-tools >= 4.7.6_10-43.67.1
  • xen-tools-domU >= 4.7.6_10-43.67.1
Patchnames:
SUSE-SLE-POS-12-SP2-CLIENT-2020-2822
SUSE Linux Enterprise Server 11 SP4-LTSS
SUSE Linux Enterprise Server for SAP Applications 11 SP4-LTSS
  • xen >= 4.4.4_44-61.55.1
  • xen-doc-html >= 4.4.4_44-61.55.1
  • xen-kmp-default >= 4.4.4_44_3.0.101_108.117-61.55.1
  • xen-kmp-pae >= 4.4.4_44_3.0.101_108.117-61.55.1
  • xen-libs >= 4.4.4_44-61.55.1
  • xen-libs-32bit >= 4.4.4_44-61.55.1
  • xen-tools >= 4.4.4_44-61.55.1
  • xen-tools-domU >= 4.4.4_44-61.55.1
Patchnames:
slessp4-xen-14521
SUSE Linux Enterprise Server 12 SP2-BCL
SUSE Linux Enterprise Server for SAP Applications 12 SP2-BCL
  • xen >= 4.7.6_10-43.67.1
  • xen-doc-html >= 4.7.6_10-43.67.1
  • xen-libs >= 4.7.6_10-43.67.1
  • xen-libs-32bit >= 4.7.6_10-43.67.1
  • xen-tools >= 4.7.6_10-43.67.1
  • xen-tools-domU >= 4.7.6_10-43.67.1
Patchnames:
SUSE-SLE-SERVER-12-SP2-BCL-2020-2822
SUSE Linux Enterprise Server 12 SP2-ESPOS
SUSE Linux Enterprise Server for SAP Applications 12 SP2-ESPOS
  • xen >= 4.7.6_10-43.67.1
  • xen-doc-html >= 4.7.6_10-43.67.1
  • xen-libs >= 4.7.6_10-43.67.1
  • xen-libs-32bit >= 4.7.6_10-43.67.1
  • xen-tools >= 4.7.6_10-43.67.1
  • xen-tools-domU >= 4.7.6_10-43.67.1
Patchnames:
SUSE-SLE-SERVER-12-SP2-ESPOS-2020-2822
SUSE Linux Enterprise Server 12 SP2-LTSS
SUSE Linux Enterprise Server for SAP Applications 12 SP2-LTSS
  • xen >= 4.7.6_10-43.67.1
  • xen-doc-html >= 4.7.6_10-43.67.1
  • xen-libs >= 4.7.6_10-43.67.1
  • xen-libs-32bit >= 4.7.6_10-43.67.1
  • xen-tools >= 4.7.6_10-43.67.1
  • xen-tools-domU >= 4.7.6_10-43.67.1
Patchnames:
SUSE-SLE-SERVER-12-SP2-2020-2822
SUSE Linux Enterprise Server 12 SP3-BCL
SUSE Linux Enterprise Server for SAP Applications 12 SP3-BCL
  • xen >= 4.9.4_12-3.74.1
  • xen-doc-html >= 4.9.4_12-3.74.1
  • xen-libs >= 4.9.4_12-3.74.1
  • xen-libs-32bit >= 4.9.4_12-3.74.1
  • xen-tools >= 4.9.4_12-3.74.1
  • xen-tools-domU >= 4.9.4_12-3.74.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-BCL-2020-2787
SUSE Linux Enterprise Server 12 SP3-ESPOS
SUSE Linux Enterprise Server for SAP Applications 12 SP3-ESPOS
  • xen >= 4.9.4_12-3.74.1
  • xen-doc-html >= 4.9.4_12-3.74.1
  • xen-libs >= 4.9.4_12-3.74.1
  • xen-libs-32bit >= 4.9.4_12-3.74.1
  • xen-tools >= 4.9.4_12-3.74.1
  • xen-tools-domU >= 4.9.4_12-3.74.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-ESPOS-2020-2787
SUSE Linux Enterprise Server 12 SP3-LTSS
SUSE Linux Enterprise Server for SAP Applications 12 SP3-LTSS
  • xen >= 4.9.4_12-3.74.1
  • xen-doc-html >= 4.9.4_12-3.74.1
  • xen-libs >= 4.9.4_12-3.74.1
  • xen-libs-32bit >= 4.9.4_12-3.74.1
  • xen-tools >= 4.9.4_12-3.74.1
  • xen-tools-domU >= 4.9.4_12-3.74.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-2020-2787
SUSE Linux Enterprise Server 12 SP4-ESPOS
SUSE Linux Enterprise Server for SAP Applications 12 SP4-ESPOS
  • xen >= 4.11.4_08-2.36.1
  • xen-doc-html >= 4.11.4_08-2.36.1
  • xen-libs >= 4.11.4_08-2.36.1
  • xen-libs-32bit >= 4.11.4_08-2.36.1
  • xen-tools >= 4.11.4_08-2.36.1
  • xen-tools-domU >= 4.11.4_08-2.36.1
Patchnames:
SUSE-SLE-SERVER-12-SP4-ESPOS-2020-2786
SUSE Linux Enterprise Server 12 SP4-LTSS
SUSE Linux Enterprise Server for SAP Applications 12 SP4-LTSS
  • xen >= 4.11.4_08-2.36.1
  • xen-doc-html >= 4.11.4_08-2.36.1
  • xen-libs >= 4.11.4_08-2.36.1
  • xen-libs-32bit >= 4.11.4_08-2.36.1
  • xen-tools >= 4.11.4_08-2.36.1
  • xen-tools-domU >= 4.11.4_08-2.36.1
Patchnames:
SUSE-SLE-SERVER-12-SP4-LTSS-2020-2786
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server for SAP Applications 12 SP5
  • xen >= 4.12.3_08-3.24.1
  • xen-doc-html >= 4.12.3_08-3.24.1
  • xen-libs >= 4.12.3_08-3.24.1
  • xen-libs-32bit >= 4.12.3_08-3.24.1
  • xen-tools >= 4.12.3_08-3.24.1
  • xen-tools-domU >= 4.12.3_08-3.24.1
Patchnames:
SUSE-SLE-SERVER-12-SP5-2020-2788
SUSE Linux Enterprise Server 15-LTSS
  • xen >= 4.10.4_16-3.41.1
  • xen-devel >= 4.10.4_16-3.41.1
  • xen-libs >= 4.10.4_16-3.41.1
  • xen-tools >= 4.10.4_16-3.41.1
  • xen-tools-domU >= 4.10.4_16-3.41.1
Patchnames:
SUSE-SLE-Product-SLES-15-2020-2789
SUSE Linux Enterprise Server for SAP Applications 12 SP2
  • xen >= 4.7.6_10-43.67.1
  • xen-doc-html >= 4.7.6_10-43.67.1
  • xen-libs >= 4.7.6_10-43.67.1
  • xen-libs-32bit >= 4.7.6_10-43.67.1
  • xen-tools >= 4.7.6_10-43.67.1
  • xen-tools-domU >= 4.7.6_10-43.67.1
Patchnames:
SUSE-SLE-SAP-12-SP2-2020-2822
SUSE Linux Enterprise Server for SAP Applications 12 SP3
  • xen >= 4.9.4_12-3.74.1
  • xen-doc-html >= 4.9.4_12-3.74.1
  • xen-libs >= 4.9.4_12-3.74.1
  • xen-libs-32bit >= 4.9.4_12-3.74.1
  • xen-tools >= 4.9.4_12-3.74.1
  • xen-tools-domU >= 4.9.4_12-3.74.1
Patchnames:
SUSE-SLE-SAP-12-SP3-2020-2787
SUSE Linux Enterprise Server for SAP Applications 12 SP4
  • xen >= 4.11.4_08-2.36.1
  • xen-doc-html >= 4.11.4_08-2.36.1
  • xen-libs >= 4.11.4_08-2.36.1
  • xen-libs-32bit >= 4.11.4_08-2.36.1
  • xen-tools >= 4.11.4_08-2.36.1
  • xen-tools-domU >= 4.11.4_08-2.36.1
Patchnames:
SUSE-SLE-SAP-12-SP4-2020-2786
SUSE Linux Enterprise Server for SAP Applications 15
  • xen >= 4.10.4_16-3.41.1
  • xen-devel >= 4.10.4_16-3.41.1
  • xen-libs >= 4.10.4_16-3.41.1
  • xen-tools >= 4.10.4_16-3.41.1
  • xen-tools-domU >= 4.10.4_16-3.41.1
Patchnames:
SUSE-SLE-Product-SLES_SAP-15-2020-2789
SUSE Linux Enterprise Software Development Kit 12 SP5
  • xen >= 4.12.3_08-3.24.1
  • xen-devel >= 4.12.3_08-3.24.1
Patchnames:
SUSE-SLE-SDK-12-SP5-2020-2788
SUSE OpenStack Cloud 7
  • xen >= 4.7.6_10-43.67.1
  • xen-doc-html >= 4.7.6_10-43.67.1
  • xen-libs >= 4.7.6_10-43.67.1
  • xen-libs-32bit >= 4.7.6_10-43.67.1
  • xen-tools >= 4.7.6_10-43.67.1
  • xen-tools-domU >= 4.7.6_10-43.67.1
Patchnames:
SUSE-OpenStack-Cloud-7-2020-2822
SUSE OpenStack Cloud 8
  • xen >= 4.9.4_12-3.74.1
  • xen-doc-html >= 4.9.4_12-3.74.1
  • xen-libs >= 4.9.4_12-3.74.1
  • xen-libs-32bit >= 4.9.4_12-3.74.1
  • xen-tools >= 4.9.4_12-3.74.1
  • xen-tools-domU >= 4.9.4_12-3.74.1
Patchnames:
SUSE-OpenStack-Cloud-8-2020-2787
SUSE OpenStack Cloud 9
  • xen >= 4.11.4_08-2.36.1
  • xen-doc-html >= 4.11.4_08-2.36.1
  • xen-libs >= 4.11.4_08-2.36.1
  • xen-libs-32bit >= 4.11.4_08-2.36.1
  • xen-tools >= 4.11.4_08-2.36.1
  • xen-tools-domU >= 4.11.4_08-2.36.1
Patchnames:
SUSE-OpenStack-Cloud-9-2020-2786
SUSE OpenStack Cloud Crowbar 8
  • xen >= 4.9.4_12-3.74.1
  • xen-doc-html >= 4.9.4_12-3.74.1
  • xen-libs >= 4.9.4_12-3.74.1
  • xen-libs-32bit >= 4.9.4_12-3.74.1
  • xen-tools >= 4.9.4_12-3.74.1
  • xen-tools-domU >= 4.9.4_12-3.74.1
Patchnames:
SUSE-OpenStack-Cloud-Crowbar-8-2020-2787
SUSE OpenStack Cloud Crowbar 9
  • xen >= 4.11.4_08-2.36.1
  • xen-doc-html >= 4.11.4_08-2.36.1
  • xen-libs >= 4.11.4_08-2.36.1
  • xen-libs-32bit >= 4.11.4_08-2.36.1
  • xen-tools >= 4.11.4_08-2.36.1
  • xen-tools-domU >= 4.11.4_08-2.36.1
Patchnames:
SUSE-OpenStack-Cloud-Crowbar-9-2020-2786
openSUSE Leap 15.2
  • xen >= 4.13.1_08-lp152.2.9.1
  • xen-debugsource >= 4.13.1_08-lp152.2.9.1
  • xen-devel >= 4.13.1_08-lp152.2.9.1
  • xen-doc-html >= 4.13.1_08-lp152.2.9.1
  • xen-libs >= 4.13.1_08-lp152.2.9.1
  • xen-libs-32bit >= 4.13.1_08-lp152.2.9.1
  • xen-libs-32bit-debuginfo >= 4.13.1_08-lp152.2.9.1
  • xen-libs-debuginfo >= 4.13.1_08-lp152.2.9.1
  • xen-tools >= 4.13.1_08-lp152.2.9.1
  • xen-tools-debuginfo >= 4.13.1_08-lp152.2.9.1
  • xen-tools-domU >= 4.13.1_08-lp152.2.9.1
  • xen-tools-domU-debuginfo >= 4.13.1_08-lp152.2.9.1
  • xen-tools-xendomains-wait-disk >= 4.13.1_08-lp152.2.9.1
Patchnames:
openSUSE-2020-1608


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 15-SP2 Module for Basesystem xen Released
SUSE Linux Enterprise 15-SP2 Module for Server Applications xen Released
SUSE Linux Enterprise High Performance Computing 12 SP4 xen Affected
SUSE Linux Enterprise High Performance Computing 12 SP5 xen Released
SUSE Linux Enterprise High Performance Computing 15 LTSS xen Affected
SUSE Linux Enterprise Server 11 SP4 LTSS xen Affected
SUSE Linux Enterprise Server 12 SP2 BCL xen Affected
SUSE Linux Enterprise Server 12 SP2 LTSS xen Affected
SUSE Linux Enterprise Server 12 SP3 BCL xen Affected
SUSE Linux Enterprise Server 12 SP3 LTSS xen Affected
SUSE Linux Enterprise Server 12 SP4 LTSS xen Affected
SUSE Linux Enterprise Server 12 SP5 xen Released
SUSE Linux Enterprise Server ESPOS 15 xen Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2 xen Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 xen Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 xen Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 xen Released
SUSE Linux Enterprise Software Development Kit 12 SP5 xen Affected