CVE-2018-19965
First published: Sat Dec 08 2018(Updated: )
An issue was discovered in Xen through 4.11.x allowing 64-bit PV guest OS users to cause a denial of service (host OS crash) because #GP[0] can occur after a non-canonical address is passed to the TLB flushing code. NOTE: this issue exists because of an incorrect CVE-2017-5754 (aka Meltdown) mitigation.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/xen | 4.11.4+107-gef32c7afa2-1 4.14.6-1 4.14.5+94-ge49571868d-1 4.17.1+2-gb773c48e36-1 4.17.2+55-g0b56bed864-1 | |
| Xen Xen | <=4.11.1 | |
| Citrix XenServer | =7.0 | |
| Citrix XenServer | =7.1-cu1 | |
| Citrix XenServer | =7.5 | |
| Citrix XenServer | =7.6 | |
| Debian Debian Linux | =9.0 |
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Reference Links
- https://xenbits.xen.org/xsa/advisory-279.txt
- https://security-tracker.debian.org/tracker/CVE-2018-19965
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
- http://www.securityfocus.com/bid/106182
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/
- https://support.citrix.com/article/CTX239432
- https://www.debian.org/security/2019/dsa-4369
- https://xenbits.xen.org/xsa/advisory-279.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/
Frequently Asked Questions
What is CVE-2018-19965 vulnerability?
It is a vulnerability in Xen through 4.11.x that allows 64-bit PV guest OS users to cause a denial of service (host OS crash) due to an incorrect Meltdown (CVE-2017-5754) mitigation.
What is the severity of CVE-2018-19965?
The severity of CVE-2018-19965 vulnerability is medium with a severity value of 5.6.
How does CVE-2018-19965 affect Xen?
CVE-2018-19965 affects Xen versions up to 4.11.x and allows 64-bit PV guest OS users to crash the host OS.
How can I fix CVE-2018-19965 vulnerability in Xen?
To fix CVE-2018-19965 vulnerability in Xen, update to versions 4.11.4+107-gef32c7afa2-1, 4.14.6-1, 4.14.5+94-ge49571868d-1, 4.17.1+2-gb773c48e36-1, or 4.17.2+55-g0b56bed864-1 depending on your Debian distribution.
Where can I find more information about CVE-2018-19965 vulnerability?
You can find more information about CVE-2018-19965 vulnerability in Xen in the advisory published at https://xenbits.xen.org/xsa/advisory-279.txt.
- collector/security-tracker-debian
- collector/nvd-index
- agent/references
- agent/severity
- agent/author
- agent/type
- agent/event
- agent/description
- agent/remedy
- agent/last-modified-date
- agent/softwarecombine
- agent/tags
- agent/first-publish-date
- collector/mitre-cve
- source/MITRE
- package-manager/debian
- vendor/xen
- canonical/xen xen
- version/xen xen/4.11.1
- vendor/citrix
- canonical/citrix xenserver
- version/citrix xenserver/7.0
- version/citrix xenserver/7.1-cu1
- version/citrix xenserver/7.5
- version/citrix xenserver/7.6
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/9.0