CVE-2019-17347

HIGH

Xen 4.1.0-4.11.1 - Denial of Service or Privilege Escalation via Virtualized %cr4 Manipulation

Title source: llm
STIX 2.1

Description

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service or gain privileges because a guest can manipulate its virtualised %cr4 in a way that is incompatible with Linux (and possibly other guest kernels).

References (5)

Core 5
Core References
Patch, Vendor Advisory x_refsource_confirm
http://xenbits.xen.org/xsa/advisory-293.html
Vendor Advisory x_refsource_misc
https://xenbits.xen.org/xsa/advisory-293.html
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2019/10/25/8
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2020/dsa-4602
Mailing List, Third Party Advisory mailing-list x_refsource_bugtraq
https://seclists.org/bugtraq/2020/Jan/21

Scores

CVSS v3 7.8
EPSS 0.0007
EPSS Percentile 21.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-20
Status published
Products (3)
debian/debian_linux 9.0
debian/debian_linux 10.0
xen/xen 4.1.0 - 4.11.2
Published Oct 08, 2019
Tracked Since Feb 18, 2026