Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2018-16871

Disclosure Date: July 30, 2019 •
CVE-2018-16871 CVSS v3 Base Score: 7.5
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Description

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.

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CVSS V3 Severity and Metrics
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
kernel: all 3.x, all 4.x up to 4.20
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • linux,
  • netapp,
  • redhat

Products

  • cloud backup -,
  • developer tools 1.0,
  • enterprise linux 7.0,
  • enterprise linux desktop 7.0,
  • enterprise linux eus 7.4,
  • enterprise linux server 7.0,
  • enterprise linux server aus 7.4,
  • enterprise linux server aus 7.6,
  • enterprise linux server eus 7.6,
  • enterprise linux server tus 7.4,
  • enterprise linux server tus 7.6,
  • enterprise linux workstation 7.0,
  • h300e firmware -,
  • h300s firmware -,
  • h410c firmware -,
  • h410s firmware -,
  • h500e firmware -,
  • h500s firmware -,
  • h700e firmware -,
  • h700s firmware -,
  • linux kernel,
  • mrg realtime 2.0
Technical Analysis