CVE-2018-19963
7.8
HIGH
CVSS 3.1
EPSS 0.05%
Description
An issue was discovered in Xen 4.11 allowing HVM guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because x86 IOREQ server resource accounting (for external emulators) was mishandled.
How to fix CVE-2018-19963
To remediate CVE-2018-19963, upgrade the affected package to a fixed version below.
- Alpine/xen—upgrade to 4.11.1-r0 or later
- Debian/xen—upgrade to 4.11.1-1 or later
Is CVE-2018-19963 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.11.1-r0
- from 0, < 4.11.1-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |