UBUNTU-CVE-2019-19583

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Source
https://ubuntu.com/security/notices/UBUNTU-CVE-2019-19583
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-19583.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2019-19583
Related
Published
2019-12-11T18:16:00Z
Modified
2019-12-11T18:16:00Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

An issue was discovered in Xen through 4.12.x allowing x86 HVM/PVH guest OS users to cause a denial of service (guest OS crash) because VMX VMEntry checks mishandle a certain case. Please see XSA-260 for background on the MovSS shadow. Please see XSA-156 for background on the need for #DB interception. The VMX VMEntry checks do not like the exact combination of state which occurs when #DB in intercepted, Single Stepping is active, and blocked by STI/MovSS is active, despite this being a legitimate state to be in. The resulting VMEntry failure is fatal to the guest. HVM/PVH guest userspace code may be able to crash the guest, resulting in a guest Denial of Service. All versions of Xen are affected. Only systems supporting VMX hardware virtual extensions (Intel, Cyrix, or Zhaoxin CPUs) are affected. Arm and AMD systems are unaffected. Only HVM/PVH guests are affected. PV guests cannot leverage the vulnerability.

References

Affected packages

Ubuntu:Pro:16.04:LTS / xen

Package

Name
xen

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.5.1-0ubuntu1
4.5.1-0ubuntu2
4.6.0-1ubuntu1
4.6.0-1ubuntu2
4.6.0-1ubuntu4
4.6.0-1ubuntu4.1
4.6.0-1ubuntu4.2
4.6.0-1ubuntu4.3
4.6.5-0ubuntu1
4.6.5-0ubuntu1.1
4.6.5-0ubuntu1.2
4.6.5-0ubuntu1.4

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:18.04:LTS / xen

Package

Name
xen

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.9.0-0ubuntu3
4.9.0-0ubuntu4
4.9.2-0ubuntu1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:20.04:LTS / xen

Package

Name
xen
Purl
pkg:deb/ubuntu/xen@4.11.3+24-g14b62ab3e5-1ubuntu1?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.11.3+24-g14b62ab3e5-1ubuntu1

Affected versions

4.*

4.9.2-0ubuntu2
4.9.2-0ubuntu6
4.9.2-0ubuntu7

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "xen-doc": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxengnttab1": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxendevicemodel1-dbgsym": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xen-hypervisor-4.11-armhf": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xen-hypervisor-4.9-armhf": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxenevtchn1-dbgsym": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxentoolcore1-dbgsym": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxentoollog1-dbgsym": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xen-hypervisor-common": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xen-hypervisor-4.9-arm64": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxenforeignmemory1": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxencall1": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xen-utils-common-dbgsym": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xen-utils-4.11-dbgsym": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxenmisc4.11-dbgsym": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xen-system-arm64": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xenstore-utils-dbgsym": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxenstore3.0": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xen-hypervisor-4.11-arm64": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxengnttab1-dbgsym": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxenstore3.0-dbgsym": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xen-hypervisor-4.9-amd64": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxenforeignmemory1-dbgsym": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxendevicemodel1": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxen-dev": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xen-system-amd64": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxentoolcore1": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxencall1-dbgsym": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xenstore-utils": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxenevtchn1": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xen-utils-common": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xen-system-armhf": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxentoollog1": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xen-hypervisor-4.11-amd64": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "xen-utils-4.11": "4.11.3+24-g14b62ab3e5-1ubuntu1",
            "libxenmisc4.11": "4.11.3+24-g14b62ab3e5-1ubuntu1"
        }
    ]
}