CVE-2017-10917

HIGH

Description

Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221.

References

http://www.debian.org/security/2017/dsa-3969

http://www.securityfocus.com/bid/99157

http://www.securitytracker.com/id/1038731

https://security.gentoo.org/glsa/201708-03

https://xenbits.xen.org/xsa/advisory-221.html

Details

Source: MITRE

Published: 2017-07-05

Updated: 2017-11-04

Type: CWE-476

Risk Information

CVSS v2.0

Base Score: 9.4

Vector: (AV:N/AC:L/Au:N/C:C/I:N/A:C)

Impact Score: 9.2

Exploitability Score: 10

Severity: HIGH

CVSS v3.0

Base Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Impact Score: 5.2

Exploitability Score: 3.9

Severity: CRITICAL