What is CVE-2018-19963?

CVE-2018-19963 is a high-severity vulnerability in Xen, classified under Reachable Assertion. CVSS score: 7.8/10. Published 2018-12-08.

How severe is CVE-2018-19963?

High severity. CVSS v3 base score is 7.8 out of 10.

Vulnerability in Xen

CVE-2018-19963

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.

EPSS: 0.004 (29.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Xen — versions 4.11.0
N/a — versions n/a

Weakness classification (CWE)

CWE-617 — Reachable Assertion

References

cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)

Frequently asked questions

What is CVE-2018-19963?: CVE-2018-19963 is a high-severity vulnerability in Xen, classified under Reachable Assertion. CVSS score: 7.8/10. Published 2018-12-08.
How severe is CVE-2018-19963?: High severity. CVSS v3 base score is 7.8 out of 10.