National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-4480 Detail

Current Description

The guest_walk_tables function in arch/x86/mm/guest_walk.c in Xen 4.6.x and earlier does not properly handle the Page Size (PS) page table entry bit at the L4 and L3 page table levels, which might allow local guest OS users to gain privileges via a crafted mapping of memory.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 8.4 HIGH
Vector:  CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.debian.org/security/2016/dsa-3633
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html Vendor Advisory
http://www.securityfocus.com/bid/90710
http://www.securitytracker.com/id/1035901
http://xenbits.xen.org/xsa/advisory-176.html Vendor Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-264 Permissions, Privileges, and Access Controls NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:oracle:vm_server:3.2:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
4.6.1


Change History

6 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-4480
NVD Published Date:
05/18/2016
NVD Last Modified:
11/30/2016