CVE-2024-49974
"NFS Denial of Service (DoS)"
Description
In the Linux kernel, the following vulnerability has been resolved: NFSD: Limit the number of concurrent async COPY operations Nothing appears to limit the number of concurrent async COPY operations that clients can start. In addition, AFAICT each async COPY can copy an unlimited number of 4MB chunks, so can run for a long time. Thus IMO async COPY can become a DoS vector. Add a restriction mechanism that bounds the number of concurrent background COPY operations. Start simple and try to be fair -- this patch implements a per-namespace limit. An async COPY request that occurs while this limit is exceeded gets NFS4ERR_DELAY. The requesting client can choose to send the request again after a delay or fall back to a traditional read/write style copy. If there is need to make the mechanism more sophisticated, we can visit that in future patches.
INFO
Published Date :
Oct. 21, 2024, 6:15 p.m.
Last Modified :
Dec. 14, 2024, 9:15 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
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-2024-49974.
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-2024-49974 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-49974 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 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Dec. 14, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/43e46ee5efc03990b223f7aa8b77aa9c3d3acfdf Added Reference https://git.kernel.org/stable/c/9e52ff544e0bfa09ee339fd7b0937ee3c080c24e -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Dec. 02, 2024
Action Type Old Value New Value Added Reference https://git.kernel.org/stable/c/7ea9260874b779637aff6d24c344b8ef4ac862a0 Added Reference https://git.kernel.org/stable/c/ae267989b7b7933dfedcd26468d0a88fc3a9da9e -
Initial Analysis by [email protected]
Nov. 01, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://git.kernel.org/stable/c/6a488ad7745b8f64625c6d3a24ce7e448e83f11b No Types Assigned https://git.kernel.org/stable/c/6a488ad7745b8f64625c6d3a24ce7e448e83f11b Patch Changed Reference Type https://git.kernel.org/stable/c/aadc3bbea163b6caaaebfdd2b6c4667fbc726752 No Types Assigned https://git.kernel.org/stable/c/aadc3bbea163b6caaaebfdd2b6c4667fbc726752 Patch Changed Reference Type https://git.kernel.org/stable/c/b4e21431a0db4854b5023cd5af001be557e6c3db No Types Assigned https://git.kernel.org/stable/c/b4e21431a0db4854b5023cd5af001be557e6c3db Patch Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (excluding) 6.10.14 *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions from (including) 6.11 up to (excluding) 6.11.3 -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 21, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: NFSD: Limit the number of concurrent async COPY operations Nothing appears to limit the number of concurrent async COPY operations that clients can start. In addition, AFAICT each async COPY can copy an unlimited number of 4MB chunks, so can run for a long time. Thus IMO async COPY can become a DoS vector. Add a restriction mechanism that bounds the number of concurrent background COPY operations. Start simple and try to be fair -- this patch implements a per-namespace limit. An async COPY request that occurs while this limit is exceeded gets NFS4ERR_DELAY. The requesting client can choose to send the request again after a delay or fall back to a traditional read/write style copy. If there is need to make the mechanism more sophisticated, we can visit that in future patches. Added Reference kernel.org https://git.kernel.org/stable/c/b4e21431a0db4854b5023cd5af001be557e6c3db [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/6a488ad7745b8f64625c6d3a24ce7e448e83f11b [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/aadc3bbea163b6caaaebfdd2b6c4667fbc726752 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-49974 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-2024-49974
weaknesses.