Upstream information

CVE-2019-18420 at MITRE

Description

An issue was discovered in Xen through 4.12.x allowing x86 PV guest OS users to cause a denial of service via a VCPUOP_initialise hypercall. hypercall_create_continuation() is a variadic function which uses a printf-like format string to interpret its parameters. Error handling for a bad format character was done using BUG(), which crashes Xen. One path, via the VCPUOP_initialise hypercall, has a bad format character. The BUG() can be hit if VCPUOP_initialise executes for a sufficiently long period of time for a continuation to be created. Malicious guests may cause a hypervisor crash, resulting in a Denial of Service (DoS). Xen versions 4.6 and newer are vulnerable. Xen versions 4.5 and earlier are not vulnerable. Only x86 PV guests can exploit the vulnerability. HVM and PVH guests, and guests on ARM systems, cannot exploit the vulnerability.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 6.3
Vector AV:N/AC:M/Au:S/C:N/I:N/A:C
Access Vector Network
Access Complexity Medium
Authentication Single
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 6.5 6.5
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Access Vector Network Local
Access Complexity Low Low
Privileges Required Low Low
User Interaction None None
Scope Unchanged Changed
Confidentiality Impact None None
Integrity Impact None None
Availability Impact High High
CVSSv3 Version 3.1 3
SUSE Bugzilla entry: 1154448 [NEW]

SUSE Security Advisories:

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
Image SLES15-EC2-CHOST-HVM-BYOS
  • xen-libs >= 4.10.4_06-3.25.1
  • xen-tools-domU >= 4.10.4_06-3.25.1
Image SLES15-SP1-CHOST-BYOS-EC2
  • xen-libs >= 4.12.1_04-3.6.1
  • xen-tools-domU >= 4.12.1_04-3.6.1
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 >= 4.11.2_04-2.17.1
  • xen-libs >= 4.11.2_04-2.17.1
  • xen-libs-32bit >= 4.11.2_04-2.17.1
Patchnames:
SUSE-SLE-DESKTOP-12-SP4-2019-2962
SUSE Linux Enterprise High Performance Computing 12 SP5
SUSE Linux Enterprise Server 12 SP5
  • xen >= 4.12.1_06-1.1
  • xen-doc-html >= 4.12.1_06-1.1
  • xen-libs >= 4.12.1_06-1.1
  • xen-libs-32bit >= 4.12.1_06-1.1
  • xen-tools >= 4.12.1_06-1.1
  • xen-tools-domU >= 4.12.1_06-1.1
SUSE Linux Enterprise Module for Basesystem 15 SP1
  • xen >= 4.12.1_04-3.6.1
  • xen-libs >= 4.12.1_04-3.6.1
  • xen-tools-domU >= 4.12.1_04-3.6.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-SP1-2019-2961
SUSE Linux Enterprise Module for Basesystem 15
  • xen >= 4.10.4_06-3.25.1
  • xen-libs >= 4.10.4_06-3.25.1
  • xen-tools-domU >= 4.10.4_06-3.25.1
Patchnames:
SUSE-SLE-Module-Basesystem-15-2019-2960
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP1
  • xen >= 4.12.1_04-3.6.1
  • xen-devel >= 4.12.1_04-3.6.1
  • xen-doc-html >= 4.12.1_04-3.6.1
  • xen-libs >= 4.12.1_04-3.6.1
  • xen-libs-32bit >= 4.12.1_04-3.6.1
  • xen-tools >= 4.12.1_04-3.6.1
  • xen-tools-domU >= 4.12.1_04-3.6.1
Patchnames:
SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2019-2961
SUSE Linux Enterprise Module for Server Applications 15 SP1
  • xen >= 4.12.1_04-3.6.1
  • xen-devel >= 4.12.1_04-3.6.1
  • xen-tools >= 4.12.1_04-3.6.1
Patchnames:
SUSE-SLE-Module-Server-Applications-15-SP1-2019-2961
SUSE Linux Enterprise Module for Server Applications 15
  • xen >= 4.10.4_06-3.25.1
  • xen-devel >= 4.10.4_06-3.25.1
  • xen-tools >= 4.10.4_06-3.25.1
Patchnames:
SUSE-SLE-Module-Server-Applications-15-2019-2960
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 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 SP1-LTSS
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 12 SP2-BCL
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 12 SP2-ESPOS
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 12 SP2-LTSS
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 12 SP3-BCL
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 12 SP3-ESPOS
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 12 SP3-LTSS
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 12 SP4
SUSE Linux Enterprise Server for SAP Applications 12 SP4
  • xen >= 4.11.2_04-2.17.1
  • xen-doc-html >= 4.11.2_04-2.17.1
  • xen-libs >= 4.11.2_04-2.17.1
  • xen-libs-32bit >= 4.11.2_04-2.17.1
  • xen-tools >= 4.11.2_04-2.17.1
  • xen-tools-domU >= 4.11.2_04-2.17.1
Patchnames:
SUSE-SLE-SERVER-12-SP4-2019-2962
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 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 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 Software Development Kit 12 SP4
  • xen >= 4.11.2_04-2.17.1
  • xen-devel >= 4.11.2_04-2.17.1
Patchnames:
SUSE-SLE-SDK-12-SP4-2019-2962
SUSE Linux Enterprise Software Development Kit 12 SP5
  • xen-devel >= 4.12.1_06-1.1
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 15.0
  • xen >= 4.10.4_06-lp150.2.25.1
  • xen-debugsource >= 4.10.4_06-lp150.2.25.1
  • xen-devel >= 4.10.4_06-lp150.2.25.1
  • xen-doc-html >= 4.10.4_06-lp150.2.25.1
  • xen-libs >= 4.10.4_06-lp150.2.25.1
  • xen-libs-32bit >= 4.10.4_06-lp150.2.25.1
  • xen-libs-32bit-debuginfo >= 4.10.4_06-lp150.2.25.1
  • xen-libs-debuginfo >= 4.10.4_06-lp150.2.25.1
  • xen-tools >= 4.10.4_06-lp150.2.25.1
  • xen-tools-debuginfo >= 4.10.4_06-lp150.2.25.1
  • xen-tools-domU >= 4.10.4_06-lp150.2.25.1
  • xen-tools-domU-debuginfo >= 4.10.4_06-lp150.2.25.1
Patchnames:
openSUSE-2019-2506
openSUSE Leap 15.1
  • xen >= 4.12.1_04-lp151.2.6.1
  • xen-debugsource >= 4.12.1_04-lp151.2.6.1
  • xen-devel >= 4.12.1_04-lp151.2.6.1
  • xen-doc-html >= 4.12.1_04-lp151.2.6.1
  • xen-libs >= 4.12.1_04-lp151.2.6.1
  • xen-libs-32bit >= 4.12.1_04-lp151.2.6.1
  • xen-libs-32bit-debuginfo >= 4.12.1_04-lp151.2.6.1
  • xen-libs-debuginfo >= 4.12.1_04-lp151.2.6.1
  • xen-tools >= 4.12.1_04-lp151.2.6.1
  • xen-tools-debuginfo >= 4.12.1_04-lp151.2.6.1
  • xen-tools-domU >= 4.12.1_04-lp151.2.6.1
  • xen-tools-domU-debuginfo >= 4.12.1_04-lp151.2.6.1
Patchnames:
openSUSE-2019-2508


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 Released
SUSE Container as a Service Platform 1.0 xen Affected
SUSE Container as a Service Platform 2.0 xen Affected
SUSE Linux Enterprise 15 Module for Basesystem xen Released
SUSE Linux Enterprise 15 Module for Server Applications xen Released
SUSE Linux Enterprise 15-SP1 Module for Basesystem xen Released
SUSE Linux Enterprise 15-SP1 Module for Server Applications xen Released
SUSE Linux Enterprise Desktop 12 SP4 xen Released
SUSE Linux Enterprise High Performance Computing 12 SP4 xen Released
SUSE Linux Enterprise Server 11 SP4 LTSS xen Released
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 Already fixed
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 Software Development Kit 12 SP4 xen Released