CVE-2016-4480
Xen Guest OS Page Table Privilege Escalation Vulnerability
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.
INFO
Published Date :
May 18, 2016, 2:59 p.m.
Last Modified :
Dec. 1, 2016, 3:10 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
2.5
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2016-4480.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2016-4480 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-4480 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Dec. 01, 2016
Action Type Old Value New Value Added Reference http://www.securitytracker.com/id/1035901 [No Types Assigned] -
CVE Modified by [email protected]
Nov. 28, 2016
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 by [email protected]
Sep. 12, 2016
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 [email protected]
Sep. 09, 2016
Action Type Old Value New Value Added Reference http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html -
Modified Analysis by [email protected]
May. 19, 2016
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 Changed Reference Type http://xenbits.xen.org/xsa/advisory-176.html No Types Assigned http://xenbits.xen.org/xsa/advisory-176.html Advisory Added CWE CWE-264 -
Initial Analysis by [email protected]
May. 18, 2016
Action Type Old Value New Value
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-4480 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2016-4480
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.92 }} 0.26%
score
0.83109
percentile