CVE-2017-10917
9.1
CRITICAL
CVSS 3.1
EPSS 0.84%
Description
Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221.
How to fix CVE-2017-10917
To remediate CVE-2017-10917, upgrade the affected package to a fixed version below.
- Alpine/xen—upgrade to 4.9.0-r0 or later
- —upgrade to 4.8.1-1+deb9u3 or later
Is CVE-2017-10917 being exploited?
Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.9.0-r0
- from 0, < 4.8.1-1+deb9u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.1 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |