CVE-2016-4480 Detail
Modified
This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
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
Description Last Modified:
05/18/2016
Impact
CVSS v3.0 Severity and Metrics:
Base Score:
8.4 HIGH
Vector:
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
(V3 legend)
Impact Score:
5.9
Exploitability Score:
2.5
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
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:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service
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Technical Details
Vulnerability Type
(View All)
- Permissions, Privileges, and Access Control (CWE-264)
Change History
6 change records found
- show changes
CVE Modified by MITRE -
11/30/2016 10:10:58 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
http://www.securitytracker.com/id/1035901 [No Types Assigned] |
CVE Modified by MITRE -
11/28/2016 3:18:20 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
http://www.debian.org/security/2016/dsa-3633 [No Types Assigned] |
| Added |
Reference |
|
http://www.securityfocus.com/bid/90710 [No Types Assigned] |
Modified Analysis -
9/12/2016 10:47:53 AM
| Action |
Type |
Old Value |
New Value |
| Changed |
CPE Configuration |
Configuration 1
OR
*cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:* (and previous) |
Configuration 1
OR
*cpe:2.3:o:oracle:vm_server:3.2:*:*:*:*:*:*:*
*cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:*
*cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:*
Configuration 2
OR
*cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:* (and previous) |
| Changed |
Reference Type |
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html No Types Assigned |
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html Vendor Advisory |
CVE Modified by Source -
9/8/2016 10:01:19 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html |
Modified Analysis -
5/19/2016 12:07:17 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
Configuration 1
OR
*cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:* (and previous) |
| Added |
CVSS V2 |
|
(AV:L/AC:L/Au:N/C:C/I:C/A:C) |
| Added |
CVSS V3 |
|
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Added |
CWE |
|
CWE-264 |
| Changed |
Reference Type |
http://xenbits.xen.org/xsa/advisory-176.html No Types Assigned |
http://xenbits.xen.org/xsa/advisory-176.html Advisory |
Initial CVE Analysis -
5/18/2016 11:57:47 AM
Quick Info
CVE Dictionary Entry:
CVE-2016-4480
NVD Published Date:
05/18/2016
NVD Last Modified:
11/30/2016
|