CVE-2017-17563

Published: Dec 12, 2017Modified: May 13, 2026

7.8

Vector

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

Exploitability: 1.1 / Impact: 6.0

Source: NVD

Description

An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging an incorrect mask for reference-count overflow checking in shadow mode.

Affected (1)

Products: Xen: Xen

Xen

1 product

Xen

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Xen Xen	Up to 4.9.1

Related CWEs

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

References (18)

http://www.openwall.com/lists/oss-security/2017/12/12/2

Source: cve@mitre.org

Mailing List

http://www.securityfocus.com/bid/102169

Source: cve@mitre.org

http://www.securitytracker.com/id/1040769

Source: cve@mitre.org

https://lists.debian.org/debian-lts-announce/2018/01/msg00003.html

Source: cve@mitre.org

https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html

Source: cve@mitre.org

https://security.gentoo.org/glsa/201801-14

Source: cve@mitre.org

https://support.citrix.com/article/CTX232096

Source: cve@mitre.org

https://www.debian.org/security/2018/dsa-4112

Source: cve@mitre.org

https://xenbits.xen.org/xsa/advisory-249.html

Source: cve@mitre.org

MitigationPatchVendor Advisory

http://www.openwall.com/lists/oss-security/2017/12/12/2