National Vulnerability Database

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    Vulnerabilities Detail

CVE-2016-6258 Detail

Description

The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries.

Source:  MITRE
Description Last Modified:  08/02/2016

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 8.8 HIGH
Vector: AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H (V3 legend)
Impact Score: 6.0
Exploitability Score: 2.0

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 7.2 HIGH
Vector: (AV:L/AC:L/Au:N/C:C/I:C/A:C) (V2 legend)
Impact Subscore: 10.0
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete
Additional Information:
Provides unauthorized access
Allows unauthorized disclosure of information
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://support.citrix.com/article/CTX214954 Vendor Advisory
http://www.debian.org/security/2016/dsa-3633
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html Release Notes
http://www.securityfocus.com/bid/92131 Third Party Advisory
http://www.securitytracker.com/id/1036446 Third Party Advisory
http://xenbits.xen.org/xsa/advisory-182.html Mitigation Patch Vendor Advisory
http://xenbits.xen.org/xsa/xsa182-4.5.patch Patch
http://xenbits.xen.org/xsa/xsa182-4.6.patch Patch
http://xenbits.xen.org/xsa/xsa182-unstable.patch Patch
https://security.gentoo.org/glsa/201611-09

Technical Details

Vulnerability Type (View All)

  • Improper Access Control (CWE-284)

Change History

7 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-6258
NVD Published Date:
08/02/2016
NVD Last Modified:
06/30/2017