Upstream information
Description
An issue was discovered in Xen through 4.12.x allowing attackers to gain host OS privileges via DMA in a situation where an untrusted domain has access to a physical device (and assignable-add is not used), because of an incomplete fix for CVE-2019-18424. XSA-302 relies on the use of libxl's "assignable-add" feature to prepare devices to be assigned to untrusted guests. Unfortunately, this is not considered a strictly required step for device assignment. The PCI passthrough documentation on the wiki describes alternate ways of preparing devices for assignment, and libvirt uses its own ways as well. Hosts where these "alternate" methods are used will still leave the system in a vulnerable state after the device comes back from a guest. An untrusted domain with access to a physical device can DMA into host memory, leading to privilege escalation. Only systems where guests are given direct access to physical devices capable of DMA (PCI pass-through) are vulnerable. Systems which do not use PCI pass-through are not vulnerable.SUSE information
Overall state of this security issue: Running
This issue is currently rated as having important severity.
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 |
National Vulnerability Database | |
---|---|
Base Score | 6.8 |
Vector | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Access Vector | Physical |
Access Complexity | Low |
Privileges Required | None |
User Interaction | None |
Scope | Unchanged |
Confidentiality Impact | High |
Integrity Impact | High |
Availability Impact | High |
CVSSv3 Version | 3.1 |
- 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
- SUSE-SU-2020:14444-1, published Tue Aug 4 13:39:14 MDT 2020
- SUSE-SU-2020:1630-1, published Tue Jun 16 13:12:19 MDT 2020
List of released packages
Product(s) | Fixed package version(s) | References |
---|---|---|
HPE Helion Openstack 8 |
| Patchnames: HPE-Helion-OpenStack-8-2019-3297 HPE-Helion-OpenStack-8-2020-1630 |
Image SLES15-EC2-CHOST-HVM-BYOS |
| |
Image SLES15-SP1-CHOST-BYOS-EC2 |
| |
SUSE CaaS Platform 3.0 |
| Patchnames: SUSE-CAASP-3.0-2019-3297 |
SUSE Enterprise Storage 5 |
| Patchnames: SUSE-Storage-5-2019-3297 SUSE-Storage-5-2020-1630 |
SUSE Linux Enterprise Desktop 12 SP4 |
| Patchnames: SUSE-SLE-DESKTOP-12-SP4-2019-3310 |
SUSE Linux Enterprise Module for Basesystem 15 SP1 |
| Patchnames: SUSE-SLE-Module-Basesystem-15-SP1-2019-3338 |
SUSE Linux Enterprise Module for Basesystem 15 |
| Patchnames: SUSE-SLE-Module-Basesystem-15-2019-3309 |
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP1 |
| Patchnames: SUSE-SLE-Module-Development-Tools-OBS-15-SP1-2019-3338 |
SUSE Linux Enterprise Module for Server Applications 15 SP1 |
| Patchnames: SUSE-SLE-Module-Server-Applications-15-SP1-2019-3338 |
SUSE Linux Enterprise Module for Server Applications 15 |
| Patchnames: SUSE-SLE-Module-Server-Applications-15-2019-3309 |
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT |
| 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 |
| Patchnames: slessp4-xen-14444 |
SUSE Linux Enterprise Server 12 SP1-LTSS SUSE Linux Enterprise Server for SAP Applications 12 SP1-LTSS |
| 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 |
| 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 |
| 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 |
| 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 |
| Patchnames: SUSE-SLE-SERVER-12-SP3-BCL-2019-3297 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 |
| Patchnames: SUSE-SLE-SERVER-12-SP3-ESPOS-2019-3297 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 |
| Patchnames: SUSE-SLE-SERVER-12-SP3-2019-3297 SUSE-SLE-SERVER-12-SP3-2020-1630 |
SUSE Linux Enterprise Server 12 SP4 SUSE Linux Enterprise Server for SAP Applications 12 SP4 |
| Patchnames: SUSE-SLE-SERVER-12-SP4-2019-3310 |
SUSE Linux Enterprise Server for SAP Applications 12 SP1 |
| Patchnames: SUSE-SLE-SAP-12-SP1-2020-388 |
SUSE Linux Enterprise Server for SAP Applications 12 SP2 |
| Patchnames: SUSE-SLE-SAP-12-SP2-2020-334 |
SUSE Linux Enterprise Server for SAP Applications 12 SP3 |
| Patchnames: SUSE-SLE-SAP-12-SP3-2019-3297 SUSE-SLE-SAP-12-SP3-2020-1630 |
SUSE Linux Enterprise Software Development Kit 12 SP4 |
| Patchnames: SUSE-SLE-SDK-12-SP4-2019-3310 |
SUSE OpenStack Cloud 7 |
| Patchnames: SUSE-OpenStack-Cloud-7-2020-334 |
SUSE OpenStack Cloud 8 |
| Patchnames: SUSE-OpenStack-Cloud-8-2019-3297 SUSE-OpenStack-Cloud-8-2020-1630 |
SUSE OpenStack Cloud Crowbar 8 |
| Patchnames: SUSE-OpenStack-Cloud-Crowbar-8-2019-3297 SUSE-OpenStack-Cloud-Crowbar-8-2020-1630 |
openSUSE Leap 15.1 |
| Patchnames: openSUSE-2020-11 |
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 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 High Performance Computing 12 SP5 | 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 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 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 |