CVE-2018-18021
KVM ARM64 Register Vedicator Denial of Service & Flow Hijacking
Description
arch/arm64/kvm/guest.c in KVM in the Linux kernel before 4.18.12 on the arm64 platform mishandles the KVM_SET_ON_REG ioctl. This is exploitable by attackers who can create virtual machines. An attacker can arbitrarily redirect the hypervisor flow of control (with full register control). An attacker can also cause a denial of service (hypervisor panic) via an illegal exception return. This occurs because of insufficient restrictions on userspace access to the core register file, and because PSTATE.M validation does not prevent unintended execution modes.
INFO
Published Date :
Oct. 7, 2018, 6:29 a.m.
Last Modified :
Nov. 21, 2024, 3:55 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.2
Exploitability Score :
1.8
Affected Products
The following products are affected by CVE-2018-18021
vulnerability.
Even if cvefeed.io
is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
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-2018-18021
.
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-2018-18021
vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-18021
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]
Apr. 03, 2019
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3931-2/ [No Types Assigned] Added Reference https://usn.ubuntu.com/3931-1/ [No Types Assigned] -
Initial Analysis by [email protected]
Nov. 27, 2018
Action Type Old Value New Value Added CVSS V2 (AV:L/AC:L/Au:N/C:N/I:P/A:P) Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H Changed Reference Type http://www.securityfocus.com/bid/105550 No Types Assigned http://www.securityfocus.com/bid/105550 Third Party Advisory, VDB Entry Changed Reference Type https://github.com/torvalds/linux/commit/2a3f93459d689d990b3ecfbe782fec89b97d3279 No Types Assigned https://github.com/torvalds/linux/commit/2a3f93459d689d990b3ecfbe782fec89b97d3279 Patch Changed Reference Type http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d26c25a9d19b5976b319af528886f89cf455692d No Types Assigned http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d26c25a9d19b5976b319af528886f89cf455692d Patch Changed Reference Type https://www.openwall.com/lists/oss-security/2018/10/02/2 No Types Assigned https://www.openwall.com/lists/oss-security/2018/10/02/2 Mailing List, Patch, Third Party Advisory Changed Reference Type https://github.com/torvalds/linux/commit/d26c25a9d19b5976b319af528886f89cf455692d No Types Assigned https://github.com/torvalds/linux/commit/d26c25a9d19b5976b319af528886f89cf455692d Patch Changed Reference Type https://access.redhat.com/errata/RHSA-2018:3656 No Types Assigned https://access.redhat.com/errata/RHSA-2018:3656 Third Party Advisory Changed Reference Type https://www.debian.org/security/2018/dsa-4313 No Types Assigned https://www.debian.org/security/2018/dsa-4313 Third Party Advisory Changed Reference Type http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2a3f93459d689d990b3ecfbe782fec89b97d3279 No Types Assigned http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=2a3f93459d689d990b3ecfbe782fec89b97d3279 Patch Changed Reference Type https://usn.ubuntu.com/3821-1/ No Types Assigned https://usn.ubuntu.com/3821-1/ Third Party Advisory Changed Reference Type https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.12 No Types Assigned https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.18.12 Patch Changed Reference Type https://usn.ubuntu.com/3821-2/ No Types Assigned https://usn.ubuntu.com/3821-2/ Third Party Advisory Added CWE CWE-20 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 4.18.12 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* -
CVE Modified by [email protected]
Nov. 27, 2018
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2018:3656 [No Types Assigned] -
CVE Modified by [email protected]
Nov. 15, 2018
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3821-2/ [No Types Assigned] Added Reference https://usn.ubuntu.com/3821-1/ [No Types Assigned] -
CVE Modified by [email protected]
Oct. 12, 2018
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/105550 [No Types Assigned] -
CVE Modified by [email protected]
Oct. 10, 2018
Action Type Old Value New Value Added Reference https://www.debian.org/security/2018/dsa-4313 [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-2018-18021
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-2018-18021
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
0.30991
percentile