CVE-2018-18883
8.8
HIGH
CVSS 3.1
EPSS 0.17%
Description
An issue was discovered in Xen 4.9.x through 4.11.x, on Intel x86 platforms, allowing x86 HVM and PVH guests to cause a host OS denial of service (NULL pointer dereference) or possibly have unspecified other impact because nested VT-x is not properly restricted.
How to fix CVE-2018-18883
To remediate CVE-2018-18883, upgrade the affected package to a fixed version below.
- Alpine/xen—upgrade to 4.11.1-r0 or later
- —upgrade to 4.11.1-1 or later
Is CVE-2018-18883 being exploited?
Low — EPSS is 0.2%, 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 | HIGH8.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |