CVE-2017-10917

CRITICAL

Xen < 4.8.1 - Denial of Service via Unvalidated Event Channel Port Numbers

Title source: llm
STIX 2.1

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 (5)

Core 5
Core References
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201708-03
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2017/dsa-3969
Mailing List, Mitigation, Third Party Advisory x_refsource_confirm
https://xenbits.xen.org/xsa/advisory-221.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/99157
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1038731

Scores

CVSS v3 9.1
EPSS 0.0084
EPSS Percentile 74.9%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Details

CWE
CWE-476
Status published
Products (1)
xen/xen < 4.8.1
Published Jul 05, 2017
Tracked Since Feb 18, 2026