CVEdetails.com the ultimate security vulnerability data source
(e.g.: CVE-2009-1234 or 2010-1234 or 20101234)
Log In   Register
  Take a third party risk management course for FREE
Vulnerability Feeds & WidgetsNew   www.itsecdb.com  

Vulnerability Details : CVE-2019-14821

An out-of-bounds access issue was found in the Linux kernel, all versions through 5.3, in the way Linux kernel's KVM hypervisor implements the Coalesced MMIO write operation. It operates on an MMIO ring buffer 'struct kvm_coalesced_mmio' object, wherein write indices 'ring->first' and 'ring->last' value could be supplied by a host user-space process. An unprivileged host user or process with access to '/dev/kvm' device could use this flaw to crash the host kernel, resulting in a denial of service or potentially escalating privileges on the system.
Publish Date : 2019-09-19 Last Update Date : 2021-06-02
Search Twitter   Search YouTube   Search Google

- CVSS Scores & Vulnerability Types

CVSS Score
7.2
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 787

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2019:3309: kernel-rt security and bug fix update (Important) oval:com.redhat.rhsa:def:20193309 unix
RHSA-2019:3517: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20193517 unix
RHSA-2019:3978: kernel-rt security and bug fix update (Important) oval:com.redhat.rhsa:def:20193978 unix
RHSA-2019:3979: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20193979 unix
RHSA-2019:4256: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20194256 unix
RHSA-2020:0027: kpatch-patch security update (Important) oval:com.redhat.rhsa:def:20200027 unix
RHSA-2020:0204: kernel security and bug fix update (Important) oval:com.redhat.rhsa:def:20200204 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2019-14821

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 14.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 18.04 * * * Version Details Vulnerabilities
4 OS Canonical Ubuntu Linux 19.04 * * * Version Details Vulnerabilities
5 OS Debian Debian Linux 8.0 * * * Version Details Vulnerabilities
6 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
7 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
8 OS Fedoraproject Fedora 29 * * * Version Details Vulnerabilities
9 OS Fedoraproject Fedora 30 * * * Version Details Vulnerabilities
10 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
11 OS Linux Linux Kernel 5.4 RC1 * * Version Details Vulnerabilities
12 Application Netapp Data Availability Services - * * * Version Details Vulnerabilities
13 Application Netapp Hci Management Node - * * * Version Details Vulnerabilities
14 Application Netapp Solidfire - * * * Version Details Vulnerabilities
15 OS Opensuse Leap 15.0 * * * Version Details Vulnerabilities
16 OS Opensuse Leap 15.1 * * * Version Details Vulnerabilities
17 Application Oracle Sd-wan Edge 7.3 * * * Version Details Vulnerabilities
18 Application Oracle Sd-wan Edge 8.0 * * * Version Details Vulnerabilities
19 Application Oracle Sd-wan Edge 8.1 * * * Version Details Vulnerabilities
20 Application Oracle Sd-wan Edge 8.2 * * * Version Details Vulnerabilities
21 OS Redhat Enterprise Linux 8.0 * * * Version Details Vulnerabilities
22 OS Redhat Enterprise Linux Desktop 6.0 * * * Version Details Vulnerabilities
23 OS Redhat Enterprise Linux Desktop 7.0 * * * Version Details Vulnerabilities
24 OS Redhat Enterprise Linux Eus 7.7 * * * Version Details Vulnerabilities
25 OS Redhat Enterprise Linux For Real Time 7 * * * Version Details Vulnerabilities
26 OS Redhat Enterprise Linux For Real Time 8 * * * Version Details Vulnerabilities
27 OS Redhat Enterprise Linux Server 6.0 * * * Version Details Vulnerabilities
28 OS Redhat Enterprise Linux Server 7.0 * * * Version Details Vulnerabilities
29 OS Redhat Enterprise Linux Server Aus 7.7 * * * Version Details Vulnerabilities
30 OS Redhat Enterprise Linux Server Tus 7.7 * * * Version Details Vulnerabilities
31 OS Redhat Enterprise Linux Workstation 6.0 * * * Version Details Vulnerabilities
32 OS Redhat Enterprise Linux Workstation 7.0 * * * Version Details Vulnerabilities
33 Application Redhat Virtualization Host 4.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 4
Debian Debian Linux 3
Fedoraproject Fedora 2
Linux Linux Kernel 2
Netapp Data Availability Services 1
Netapp Hci Management Node 1
Netapp Solidfire 1
Opensuse Leap 2
Oracle Sd-wan Edge 4
Redhat Enterprise Linux 1
Redhat Enterprise Linux Desktop 2
Redhat Enterprise Linux Eus 1
Redhat Enterprise Linux For Real Time 2
Redhat Enterprise Linux Server 2
Redhat Enterprise Linux Server Aus 1
Redhat Enterprise Linux Server Tus 1
Redhat Enterprise Linux Workstation 2
Redhat Virtualization Host 1

- References For CVE-2019-14821

https://access.redhat.com/errata/RHSA-2019:4154
REDHAT RHSA-2019:4154
https://www.oracle.com/security-alerts/cpuapr2020.html
N/A N/A
https://www.debian.org/security/2019/dsa-4531
DEBIAN DSA-4531
https://seclists.org/bugtraq/2019/Sep/41
BUGTRAQ 20190925 [SECURITY] [DSA 4531-1] linux security update
https://access.redhat.com/errata/RHSA-2020:0027
REDHAT RHSA-2020:0027
https://access.redhat.com/errata/RHSA-2019:4256
REDHAT RHSA-2019:4256
https://access.redhat.com/errata/RHSA-2020:0204
REDHAT RHSA-2020:0204
https://access.redhat.com/errata/RHSA-2019:3978
REDHAT RHSA-2019:3978
https://access.redhat.com/errata/RHSA-2019:3979
REDHAT RHSA-2019:3979
http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
https://access.redhat.com/errata/RHSA-2019:3309
REDHAT RHSA-2019:3309
https://seclists.org/bugtraq/2019/Nov/11
BUGTRAQ 20191108 [slackware-security] Slackware 14.2 kernel (SSA:2019-311-01)
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00036.html
SUSE openSUSE-SU-2019:2308
https://usn.ubuntu.com/4157-1/
UBUNTU USN-4157-1
https://usn.ubuntu.com/4157-2/
UBUNTU USN-4157-2
https://usn.ubuntu.com/4162-1/
UBUNTU USN-4162-1
https://usn.ubuntu.com/4163-1/
UBUNTU USN-4163-1
https://usn.ubuntu.com/4163-2/
UBUNTU USN-4163-2
https://usn.ubuntu.com/4162-2/
UBUNTU USN-4162-2
http://packetstormsecurity.com/files/154951/Kernel-Live-Patch-Security-Notice-LSN-0058-1.html
https://access.redhat.com/errata/RHSA-2019:3517
REDHAT RHSA-2019:3517
https://security.netapp.com/advisory/ntap-20191004-0001/ CONFIRM
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00037.html
SUSE openSUSE-SU-2019:2307
https://lists.fedoraproject.org/archives/list/[email protected]/message/YW3QNMPENPFEGVTOFPSNOBL7JEIJS25P/
FEDORA FEDORA-2019-a570a92d5a
https://lists.debian.org/debian-lts-announce/2019/10/msg00000.html
MLIST [debian-lts-announce] 20191001 [SECURITY] [DLA 1940-1] linux-4.9 security update
https://lists.debian.org/debian-lts-announce/2019/09/msg00025.html
MLIST [debian-lts-announce] 20190925 [SECURITY] [DLA 1930-1] linux security update
https://lists.fedoraproject.org/archives/list/[email protected]/message/TRZQQQANZWQMPILZV7OTS3RGGRLLE2Q7/
FEDORA FEDORA-2019-15e141c6a7
http://www.openwall.com/lists/oss-security/2019/09/20/1
MLIST [oss-security] 20190920 CVE-2019-14821 Kernel: KVM: OOB memory access via mmio ring buffer
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14821 CONFIRM

- Vulnerability Conditions

Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0
Vulnerability is valid if product versions listed below are used 0

- Metasploit Modules Related To CVE-2019-14821

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site. OVAL is a registered trademark of The MITRE Corporation and the authoritative source of OVAL content is MITRE's OVAL web site.
Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.