CVE-2017-2596
Linux KVM VMXON Instruction Emulation Denial of Service
Description
The nested_vmx_check_vmptr function in arch/x86/kvm/vmx.c in the Linux kernel through 4.9.8 improperly emulates the VMXON instruction, which allows KVM L1 guest OS users to cause a denial of service (host OS memory consumption) by leveraging the mishandling of page references.
INFO
Published Date :
Feb. 6, 2017, 6:59 a.m.
Last Modified :
Feb. 12, 2023, 11:29 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
4.0
Exploitability Score :
2.0
Public PoC/Exploit Available at Github
CVE-2017-2596 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2017-2596.
| URL | Resource |
|---|---|
| http://www.debian.org/security/2017/dsa-3791 | |
| http://www.openwall.com/lists/oss-security/2017/01/31/4 | Mailing List Patch Third Party Advisory |
| http://www.securityfocus.com/bid/95878 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2017:1842 | |
| https://access.redhat.com/errata/RHSA-2017:2077 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1417812 | Issue Tracking Patch |
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).
None
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2017-2596 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2017-2596 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]
Feb. 12, 2023
Action Type Old Value New Value Changed Description Linux kernel built with the KVM visualization support (CONFIG_KVM), with nested visualization(nVMX) feature enabled(nested=1), is vulnerable to host memory leakage issue. It could occur while emulating VMXON instruction in 'handle_vmon'. An L1 guest user could use this flaw to leak host memory potentially resulting in DoS. The nested_vmx_check_vmptr function in arch/x86/kvm/vmx.c in the Linux kernel through 4.9.8 improperly emulates the VMXON instruction, which allows KVM L1 guest OS users to cause a denial of service (host OS memory consumption) by leveraging the mishandling of page references. Removed CVSS V2 Red Hat, Inc. (AV:A/AC:H/Au:S/C:N/I:N/A:C) Removed CVSS V3 Red Hat, Inc. AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H Removed Reference https://access.redhat.com/security/cve/CVE-2017-2596 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 02, 2023
Action Type Old Value New Value Changed Description The nested_vmx_check_vmptr function in arch/x86/kvm/vmx.c in the Linux kernel through 4.9.8 improperly emulates the VMXON instruction, which allows KVM L1 guest OS users to cause a denial of service (host OS memory consumption) by leveraging the mishandling of page references. Linux kernel built with the KVM visualization support (CONFIG_KVM), with nested visualization(nVMX) feature enabled(nested=1), is vulnerable to host memory leakage issue. It could occur while emulating VMXON instruction in 'handle_vmon'. An L1 guest user could use this flaw to leak host memory potentially resulting in DoS. Added CVSS V2 Red Hat, Inc. (AV:A/AC:H/Au:S/C:N/I:N/A:C) Added CVSS V3 Red Hat, Inc. AV:A/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H Added Reference https://access.redhat.com/security/cve/CVE-2017-2596 [No Types Assigned] -
CWE Remap by [email protected]
Oct. 03, 2019
Action Type Old Value New Value Changed CWE CWE-399 CWE-772 -
CVE Modified by [email protected]
Jan. 05, 2018
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2017:2077 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2017:1842 [No Types Assigned] -
CVE Modified by [email protected]
Nov. 04, 2017
Action Type Old Value New Value Added Reference http://www.debian.org/security/2017/dsa-3791 [No Types Assigned] -
Initial Analysis by [email protected]
Feb. 07, 2017
Action Type Old Value New Value Added CVSS V2 (AV:L/AC:L/Au:N/C:N/I:N/A:C) Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H Changed Reference Type http://www.openwall.com/lists/oss-security/2017/01/31/4 No Types Assigned http://www.openwall.com/lists/oss-security/2017/01/31/4 Third Party Advisory, Mailing List, Patch Changed Reference Type http://www.securityfocus.com/bid/95878 No Types Assigned http://www.securityfocus.com/bid/95878 Third Party Advisory, VDB Entry Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1417812 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1417812 Issue Tracking, Patch Added CWE CWE-399 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:4.9.8:*:*:*:*:*:*:* (and previous) -
CVE Modified by [email protected]
Feb. 07, 2017
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/95878 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2017-2596 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-2017-2596
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.00%
score
0.24592
percentile