Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.0, <= 4.20 |
| Redhat | Developer Tools | 1.0 |
| Redhat | Mrg Realtime | 2.0 |
| 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 |
| Redhat | Enterprise Linux Server Eus | 7.6 |
| Redhat | Enterprise Linux Server Tus | 7.4 |
| Redhat | Enterprise Linux Workstation | 7.0 |
| Netapp | Cloud Backup | - |
| Netapp | H410C Firmware | - |
| Netapp | H410C | - |
| Netapp | H300S Firmware | - |
| Netapp | H300S | - |
| Netapp | H500S Firmware | - |
| Netapp | H500S | - |
| Netapp | H700S Firmware | - |
| Netapp | H700S | - |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2019:2696Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2730Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0740Third Party Advisory
- 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&%3Butm_medi
- https://access.redhat.com/errata/RHSA-2019:2696Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2730Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0740Third Party Advisory
- 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&%3Butm_medi
FAQ
What is CVE-2018-16871?
CVE-2018-16871 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 poi...
How severe is CVE-2018-16871?
CVE-2018-16871 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-16871?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Redhat Developer Tools, Redhat Mrg Realtime, Redhat Enterprise Linux, Redhat Enterprise Linux Desktop.