CVE-2018-16871

Advisory lineage Upstream: 0 Downstream: 21
Modified
Published: 30 Jul 2019, 16:19
Last modified:05 Aug 2024, 10:32

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.0 (cve.org)
EPSS Score
1.5% LOW
1% probability -0.03%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

30 Jul 2019, 16:19
Published
Vulnerability first disclosed
05 Aug 2024, 10:32
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v3.0•HIGH•Score: 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 1.50%• Percentile: 81%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

  • linux•linux_kernel

    ≥ 3.0, ≤ 4.20

  • netapp•cloud_backup

    na

  • netapp•h300e

    na

  • netapp•h300s_firmware

    na

  • netapp•h410c_firmware

    na

  • netapp•h410s_firmware

    na

  • netapp•h500e

    na

  • netapp•h500s_firmware

    na

  • netapp•h700e

    na

  • netapp•h700s_firmware

    na

  • red hat•kernel:

    all 3.x, all 4.x up to 4.20

  • redhat•developer_tools

    1.0

  • redhat•enterprise_linux

    7.0

  • redhat•enterprise_linux_desktop

    7.0

  • redhat•enterprise_linux_eus

    7.4

  • redhat•enterprise_linux_server

    7.0

  • redhat•enterprise_linux_server_aus

    7.4 | 7.6

  • redhat•enterprise_linux_server_eus

    7.6

  • redhat•enterprise_linux_server_tus

    7.4 | 7.6

  • redhat•enterprise_linux_workstation

    7.0

  • redhat•mrg_realtime

    2.0

References (7)