CVEdetails.com the ultimate security vulnerability data source
(e.g.: CVE-2009-1234 or 2010-1234 or 20101234)
Log In   Register
  What's the CVSS score of your company?
Vulnerability Feeds & WidgetsNew   www.itsecdb.com  

Vulnerability Details : CVE-2018-18397

The userfaultfd implementation in the Linux kernel before 4.19.7 mishandles access control for certain UFFDIO_ ioctl calls, as demonstrated by allowing local users to write data into holes in a tmpfs file (if the user has read-only access to that file, and that file contains holes), related to fs/userfaultfd.c and mm/userfaultfd.c.
Publish Date : 2018-12-12 Last Update Date : 2020-08-24
Search Twitter   Search YouTube   Search Google

- CVSS Scores & Vulnerability Types

CVSS Score
2.1
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
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)
CWE ID 863

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2019:0163: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20190163 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-2018-18397

# 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 18.10 * * * Version Details Vulnerabilities
5 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
6 OS Redhat Enterprise Linux Desktop 7.0 * * * Version Details Vulnerabilities
7 OS Redhat Enterprise Linux Server 7.0 * * * Version Details Vulnerabilities
8 OS Redhat Enterprise Linux Server Aus 7.4 * * * Version Details Vulnerabilities
9 OS Redhat Enterprise Linux Server Aus 7.6 * * * Version Details Vulnerabilities
10 OS Redhat Enterprise Linux Server Eus 7.4 * * * Version Details Vulnerabilities
11 OS Redhat Enterprise Linux Server Eus 7.5 * * * Version Details Vulnerabilities
12 OS Redhat Enterprise Linux Server Eus 7.6 * * * Version Details Vulnerabilities
13 OS Redhat Enterprise Linux Server Tus 7.4 * * * Version Details Vulnerabilities
14 OS Redhat Enterprise Linux Server Tus 7.6 * * * Version Details Vulnerabilities
15 OS Redhat Enterprise Linux Workstation 7.0 * * * Version Details Vulnerabilities
16 Application Redhat Openshift Container Platform 3.11 * * * Version Details Vulnerabilities
17 Application Redhat Virtualization Host 4.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 4
Linux Linux Kernel 1
Redhat Enterprise Linux Desktop 1
Redhat Enterprise Linux Server 1
Redhat Enterprise Linux Server Aus 2
Redhat Enterprise Linux Server Eus 3
Redhat Enterprise Linux Server Tus 2
Redhat Enterprise Linux Workstation 1
Redhat Openshift Container Platform 1
Redhat Virtualization Host 1

- References For CVE-2018-18397

https://access.redhat.com/errata/RHBA-2019:0327
REDHAT RHBA-2019:0327
https://usn.ubuntu.com/3903-1/
UBUNTU USN-3903-1
https://access.redhat.com/errata/RHSA-2019:0831
REDHAT RHSA-2019:0831
https://usn.ubuntu.com/3901-2/
UBUNTU USN-3901-2
https://usn.ubuntu.com/3901-1/
UBUNTU USN-3901-1
https://usn.ubuntu.com/3903-2/
UBUNTU USN-3903-2
https://access.redhat.com/errata/RHSA-2019:0324
REDHAT RHSA-2019:0324
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=29ec90660d68bbdd69507c1c8b4e33aa299278b1
https://access.redhat.com/errata/RHSA-2019:0163
REDHAT RHSA-2019:0163
https://access.redhat.com/errata/RHSA-2019:0202
REDHAT RHSA-2019:0202
https://bugs.chromium.org/p/project-zero/issues/detail?id=1700
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.87
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.7
https://github.com/torvalds/linux/commit/29ec90660d68bbdd69507c1c8b4e33aa299278b1

- Metasploit Modules Related To CVE-2018-18397

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.