CVE-2019-17347

MEDIUM

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

http://www.openwall.com/lists/oss-security/2019/10/25/8

http://xenbits.xen.org/xsa/advisory-293.html

https://xenbits.xen.org/xsa/advisory-293.html

Details

Source: MITRE

Published: 2019-10-08

Updated: 2019-10-25

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 4.6

Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3.0

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH