CVE-2018-19966
First published: Sat Dec 08 2018(Updated: )
An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because of an interpretation conflict for a union data structure associated with shadow paging. NOTE: this issue exists because of an incorrect fix for CVE-2017-15595.
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-unstable | >=4.11.0<=4.11.1 | |
| Debian GNU/Linux | =9.0 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://xenbits.xen.org/xsa/advisory-280.txt
- https://security-tracker.debian.org/tracker/CVE-2018-19966
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
- http://www.securityfocus.com/bid/106182
- https://lists.debian.org/debian-lts-announce/2019/10/msg00008.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/
- https://www.debian.org/security/2019/dsa-4369
- https://xenbits.xen.org/xsa/advisory-280.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/
Frequently Asked Questions
What is the severity of CVE-2018-19966?
CVE-2018-19966 has a high severity due to its potential to cause denial of service or host OS privilege escalation.
How do I fix CVE-2018-19966?
To fix CVE-2018-19966, update the Xen hypervisor to the latest version available that addresses this vulnerability.
What versions are affected by CVE-2018-19966?
CVE-2018-19966 affects Xen versions prior to 4.11.4, as well as certain versions in the 4.14 and 4.17 series.
What impact can CVE-2018-19966 have on a system?
The impact of CVE-2018-19966 can include host OS crashes and potential privilege escalation for x86 PV guest OS users.
Is CVE-2018-19966 specific to any operating systems?
Yes, CVE-2018-19966 specifically affects systems running the Xen hypervisor, including certain versions of Debian.
- collector/security-tracker-debian
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/remedy
- agent/author
- agent/weakness
- agent/severity
- agent/last-modified-date
- agent/references
- agent/event
- agent/first-publish-date
- agent/description
- agent/source
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- package-manager/debian
- vendor/xen
- canonical/xen xen-unstable
- version/xen xen-unstable/4.11.0
- version/xen xen-unstable/4.11.1
- vendor/debian
- canonical/debian gnu/linux
- version/debian gnu/linux/9.0