CVE-2021-38199
Linux NFSv4 Client Denial of Service
Description
fs/nfs/nfs4client.c in the Linux kernel before 5.13.4 has incorrect connection-setup ordering, which allows operators of remote NFSv4 servers to cause a denial of service (hanging of mounts) by arranging for those servers to be unreachable during trunking detection.
INFO
Published Date :
Aug. 8, 2021, 8:15 p.m.
Last Modified :
Dec. 21, 2021, 12:54 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2021-38199
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-38199.
| URL | Resource |
|---|---|
| https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 | Mailing List Patch Vendor Advisory |
| https://github.com/torvalds/linux/commit/dd99e9f98fbf423ff6d365b37a98e8879170f17c | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210902-0010/ | Third Party Advisory |
| https://www.debian.org/security/2021/dsa-4978 | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-38199 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-38199 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Dec. 21, 2021
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html Mailing List, Third Party Advisory -
CVE Modified by [email protected]
Dec. 17, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/12/msg00012.html [No Types Assigned] -
Modified Analysis by [email protected]
Nov. 12, 2021
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html No Types Assigned https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html Mailing List, Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Oct. 16, 2021
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2021/10/msg00010.html [No Types Assigned] -
Modified Analysis by [email protected]
Oct. 07, 2021
Action Type Old Value New Value Changed Reference Type https://security.netapp.com/advisory/ntap-20210902-0010/ No Types Assigned https://security.netapp.com/advisory/ntap-20210902-0010/ Third Party Advisory Changed Reference Type https://www.debian.org/security/2021/dsa-4978 No Types Assigned https://www.debian.org/security/2021/dsa-4978 Third Party Advisory Added CPE Configuration AND OR *cpe:2.3:o:netapp:hci_bootstrap_os:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:hci_storage_node:-:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Sep. 25, 2021
Action Type Old Value New Value Added Reference https://www.debian.org/security/2021/dsa-4978 [No Types Assigned] -
CVE Modified by [email protected]
Sep. 02, 2021
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20210902-0010/ [No Types Assigned] -
Reanalysis by [email protected]
Aug. 16, 2021
Action Type Old Value New Value Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V2 NIST (AV:A/AC:L/Au:N/C:N/I:N/A:P) Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H -
Initial Analysis by [email protected]
Aug. 12, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 No Types Assigned https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.4 Mailing List, Patch, Vendor Advisory Changed Reference Type https://github.com/torvalds/linux/commit/dd99e9f98fbf423ff6d365b37a98e8879170f17c No Types Assigned https://github.com/torvalds/linux/commit/dd99e9f98fbf423ff6d365b37a98e8879170f17c Patch, Third Party Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 5.13.4
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-38199 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-38199
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.10 }} 0.01%
score
0.41200
percentile