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Vulnerability Details : CVE-2018-16871

A flaw was found in the Linux kernel's NFS implementation, all versions 3.x and all versions 4.x up to 4.20. An attacker, who is able to mount an exported NFS filesystem, is able to trigger a null pointer dereference by using an invalid NFS sequence. This can panic the machine and deny access to the NFS server. Any outstanding disk writes to the NFS server will be lost.
Publish Date : 2019-07-30 Last Update Date : 2021-10-04
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
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 476

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2019:1873: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20191873 unix
RHSA-2019:1891: kernel-rt security and bug fix update (Important) oval:com.redhat.rhsa:def:20191891 unix
RHSA-2020:1567: kernel-rt security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20201567 unix
RHSA-2020:1769: kernel security, bug fix, and enhancement update (Important) oval:com.redhat.rhsa:def:20201769 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-2018-16871

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel * * * * Version Details Vulnerabilities
2 Application Redhat Developer Tools 1.0 * * * Version Details Vulnerabilities
3 OS Redhat Enterprise Linux 7.0 * * * Version Details Vulnerabilities
4 OS Redhat Enterprise Linux Desktop 7.0 * * * Version Details Vulnerabilities
5 OS Redhat Enterprise Linux Server 7.0 * * * Version Details Vulnerabilities
6 OS Redhat Enterprise Linux Server Aus 7.6 * * * Version Details Vulnerabilities
7 OS Redhat Enterprise Linux Server Eus 7.6 * * * Version Details Vulnerabilities
8 OS Redhat Enterprise Linux Server Tus 7.6 * * * Version Details Vulnerabilities
9 OS Redhat Enterprise Linux Workstation 7.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 1
Redhat Developer Tools 1
Redhat Enterprise Linux 1
Redhat Enterprise Linux Desktop 1
Redhat Enterprise Linux Server 1
Redhat Enterprise Linux Server Aus 1
Redhat Enterprise Linux Server Eus 1
Redhat Enterprise Linux Server Tus 1
Redhat Enterprise Linux Workstation 1

- References For CVE-2018-16871

https://security.netapp.com/advisory/ntap-20211004-0002/ CONFIRM
https://access.redhat.com/errata/RHSA-2019:2696
REDHAT RHSA-2019:2696
https://access.redhat.com/errata/RHSA-2020:0740
REDHAT RHSA-2020:0740
https://support.f5.com/csp/article/K18657134?utm_source=f5support&utm_medium=RSS CONFIRM
https://support.f5.com/csp/article/K18657134 CONFIRM
https://access.redhat.com/errata/RHSA-2019:2730
REDHAT RHSA-2019:2730
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16871 CONFIRM

- Metasploit Modules Related To CVE-2018-16871

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


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