CVE-2017-10917 Information

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.

CVSS Vector

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

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

HIGH

Base Severity

9.1