CVE-2016-7777
Xen CPU vulnerability: Exploitable x86 EmulationHandler
Description
Xen 4.7.x and earlier does not properly honor CR0.TS and CR0.EM, which allows local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it.
INFO
Published Date :
Oct. 7, 2016, 2:59 p.m.
Last Modified :
July 1, 2017, 1:30 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.2
Exploitability Score :
1.0
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-2016-7777.
| URL | Resource |
|---|---|
| http://www.securityfocus.com/bid/93344 | Third Party Advisory VDB Entry |
| http://www.securitytracker.com/id/1036942 | Third Party Advisory VDB Entry |
| http://xenbits.xen.org/xsa/advisory-190.html | Mitigation Patch Vendor Advisory |
| https://security.gentoo.org/glsa/201611-09 | |
| https://support.citrix.com/article/CTX217363 |
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-2016-7777 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2016-7777 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]
Jul. 01, 2017
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/201611-09 [No Types Assigned] -
CVE Modified by [email protected]
Dec. 22, 2016
Action Type Old Value New Value Added Reference https://support.citrix.com/article/CTX217363 [No Types Assigned] -
CVE Translated by [email protected]
Oct. 12, 2016
Action Type Old Value New Value -
Modified Analysis by [email protected]
Oct. 11, 2016
Action Type Old Value New Value Added CPE Configuration Configuration 1 OR *cpe:2.3:o:xen:xen:4.7.0:*:*:*:*:*:*:* (and previous) Added CVSS V2 (AV:L/AC:M/Au:N/C:P/I:P/A:N) Added CVSS V3 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N Changed Reference Type http://www.securityfocus.com/bid/93344 No Types Assigned http://www.securityfocus.com/bid/93344 Third Party Advisory, VDB Entry Changed Reference Type http://www.securitytracker.com/id/1036942 No Types Assigned http://www.securitytracker.com/id/1036942 Third Party Advisory, VDB Entry Changed Reference Type http://xenbits.xen.org/xsa/advisory-190.html No Types Assigned http://xenbits.xen.org/xsa/advisory-190.html Mitigation, Vendor Advisory, Patch Added CWE CWE-362 -
Initial Analysis by [email protected]
Oct. 07, 2016
Action Type Old Value New Value Changed CPE Configuration Configuration 1 OR Configuration 1 OR *cpe:2.3:o:xen:xen:4.7.0:*:*:*:*:*:*:* (and previous) Added CVSS V2 (AV:L/AC:M/Au:N/C:P/I:P/A:N) Added CVSS V3 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N Changed Reference Type http://www.securityfocus.com/bid/93344 No Types Assigned http://www.securityfocus.com/bid/93344 Third Party Advisory, VDB Entry Changed Reference Type http://www.securitytracker.com/id/1036942 No Types Assigned http://www.securitytracker.com/id/1036942 Third Party Advisory, VDB Entry Changed Reference Type http://xenbits.xen.org/xsa/advisory-190.html No Types Assigned http://xenbits.xen.org/xsa/advisory-190.html Mitigation, Patch, Vendor Advisory Added CWE CWE-362
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2016-7777 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-2016-7777
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.07 }} 0.00%
score
0.29365
percentile