Home/CVE/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
CVE

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

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.

HIGH · CVSS 7.5 EPSS 0.01496
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-476NULL Pointer Dereference
CWE-476NULL Pointer Dereference
▤

Affected Products & Versions

20
linux kernel>= 3.0 and <= 4.20
redhat developer toolsall versions
redhat mrg realtimeall versions
redhat enterprise linuxall versions
redhat enterprise linux desktopall versions
redhat enterprise linux eusall versions
redhat enterprise linux serverall versions
redhat enterprise linux server ausall versions
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD30 Jul 2019 · 05:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

19
rhsaRHSA-2020:1769Low
rhsaRHSA-2020:1567Moderate
suse-csafSUSE-SU-2019:3246-1
suse-csafSUSE-SU-2019:3252-1
suse-csafSUSE-SU-2019:3223-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16871Issue TrackingThird Party Advisory
https://security.netapp.com/advisory/ntap-20211004-0002/Third Party Advisory
https://support.f5.com/csp/article/K18657134Third Party Advisory
https://support.f5.com/csp/article/K18657134?utm_source=f5support&amp
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