CVE-2018-19967: Input Validation
First published: Sat Dec 08 2018(Updated: )
An issue was discovered in Xen through 4.11.x on Intel x86 platforms allowing guest OS users to cause a denial of service (host OS hang) because Xen does not work around Intel's mishandling of certain HLE transactions associated with the KACQUIRE instruction prefix.
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 | <=4.11.1 | |
| Debian GNU/Linux | =9.0 |
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Reference Links
- https://xenbits.xen.org/xsa/advisory-282.txt
- https://security-tracker.debian.org/tracker/CVE-2018-19967
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00057.html
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html
- http://www.securityfocus.com/bid/106182
- https://support.citrix.com/article/CTX239432
- https://www.debian.org/security/2019/dsa-4369
- https://xenbits.xen.org/xsa/advisory-282.html
Frequently Asked Questions
What is the severity of CVE-2018-19967?
CVE-2018-19967 has a severity rating of high due to its potential to cause denial of service on the host operating system.
How do I fix CVE-2018-19967?
To remediate CVE-2018-19967, update to Xen versions 4.11.4, 4.14.6, or newer as specified in the security advisories.
Which versions of Xen are affected by CVE-2018-19967?
CVE-2018-19967 affects Xen versions up to and including 4.11.1 and specific configurations of later versions.
Is CVE-2018-19967 exploitable remotely?
CVE-2018-19967 is not directly exploitable remotely; it requires local access to the guest operating system.
What systems are impacted by CVE-2018-19967?
CVE-2018-19967 impacts systems running Xen hypervisors on Intel x86 platforms.
- collector/security-tracker-debian
- agent/references
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/remedy
- agent/author
- agent/weakness
- agent/severity
- agent/last-modified-date
- 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/4.11.1
- vendor/debian
- canonical/debian gnu/linux
- version/debian gnu/linux/9.0