CVE-2016-7154

HIGH

Description

Use-after-free vulnerability in the FIFO event channel code in Xen 4.4.x allows local guest OS administrators to cause a denial of service (host crash) and possibly execute arbitrary code or obtain sensitive information via an invalid guest frame number.

References

http://support.citrix.com/article/CTX216071

http://www.c7zero.info/stuff/csw2017_ExploringYourSystemDeeper_updated.pdf

http://www.debian.org/security/2016/dsa-3663

http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html

http://www.securityfocus.com/bid/92863

http://www.securitytracker.com/id/1036754

http://xenbits.xen.org/xsa/advisory-188.html

http://xenbits.xen.org/xsa/xsa188.patch

Details

Source: MITRE

Published: 2016-09-21

Updated: 2017-04-10

Type: CWE-416

Risk Information

CVSS v2.0

Base Score: 7.2

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

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3.0

Base Score: 6.7

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

Impact Score: 5.9

Exploitability Score: 0.8

Severity: MEDIUM