CVE-2017-17564

HIGH

Xen < 4.9.1 - Denial of Service and Privilege Escalation via Shadow Mode Reference Counting

Title source: llm
STIX 2.1

Description

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 incorrect error handling for reference counting in shadow mode.

References (9)

Core 9
Core References
Mitigation, Patch, Vendor Advisory x_refsource_confirm
https://xenbits.xen.org/xsa/advisory-250.html
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/01/msg00003.html
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/102172
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201801-14
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1040770
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2018/dsa-4112
Vendor Advisory x_refsource_confirm
https://support.citrix.com/article/CTX232096

Scores

CVSS v3 7.8
EPSS 0.0006
EPSS Percentile 20.0%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Details

CWE
CWE-388
Status published
Products (1)
xen/xen < 4.9.1
Published Dec 12, 2017
Tracked Since Feb 18, 2026