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CVE-2017-17563

Published: 12 December 2017

An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging an incorrect mask for reference-count overflow checking in shadow mode.

Notes

AuthorNote
mdeslaur
hypervisor packages are in universe. For
issues in the hypervisor, add appropriate
tags to each section, ex:
Tags_xen: universe-binary

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
xen
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(4.9.2-0ubuntu1)
kinetic Not vulnerable
(4.9.2-0ubuntu1)
artful Ignored
(end of life)
bionic
Released (4.9.2-0ubuntu1)
cosmic Not vulnerable
(4.9.2-0ubuntu1)
disco Not vulnerable
(4.9.2-0ubuntu1)
eoan Not vulnerable
(4.9.2-0ubuntu1)
focal Not vulnerable
(4.9.2-0ubuntu1)
groovy Not vulnerable
(4.9.2-0ubuntu1)
impish Not vulnerable
(4.9.2-0ubuntu1)
jammy Not vulnerable
(4.9.2-0ubuntu1)
lunar Not vulnerable
(4.9.2-0ubuntu1)
trusty Does not exist
(trusty was needs-triage)
upstream
Released (4.9.2)
xenial Needed

zesty Ignored
(end of life)
mantic Not vulnerable
(4.9.2-0ubuntu1)
Binaries built from this source package are in Universe and so are supported by the community.

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Changed
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H