4.9
MEDIUM
CVE-2020-35513
NFS Linux Kernel NFSv4.2 denial of service
Description

A flaw incorrect umask during file or directory modification in the Linux kernel NFS (network file system) functionality was found in the way user create and delete object using NFSv4.2 or newer if both simultaneously accessing the NFS by the other process that is not using new NFSv4.2. A user with access to the NFS could use this flaw to starve the resources causing denial of service.

INFO

Published Date :

Jan. 26, 2021, 6:15 p.m.

Last Modified :

Nov. 21, 2024, 5:27 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

1.2
Public PoC/Exploit Available at Github

CVE-2020-35513 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2020-35513 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.

ID Vendor Product Action
1 Linux linux_kernel
1 Redhat enterprise_linux
: Total Affected Vendor : 2 | Products : 2
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-2020-35513.

URL Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1911309 Issue Tracking Patch Third Party Advisory
https://patchwork.kernel.org/project/linux-nfs/patch/20180403203916.GH20297%40fieldses.org/
https://bugzilla.redhat.com/show_bug.cgi?id=1911309 Issue Tracking Patch Third Party Advisory
https://patchwork.kernel.org/project/linux-nfs/patch/20180403203916.GH20297%40fieldses.org/

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).

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vincent-deng/veracode-container-security-finding-parser

Map Vulnerabilities into Different Layers of the Container Image

Python

Updated: 1 year, 11 months ago
1 stars 0 fork 0 watcher
Born at : Oct. 5, 2022, 12:07 p.m. This repo has been linked 1276 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-35513 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-35513 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1911309
    Added Reference https://patchwork.kernel.org/project/linux-nfs/patch/20180403203916.GH20297%40fieldses.org/
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://patchwork.kernel.org/project/linux-nfs/patch/20180403203916.GH20297%40fieldses.org/ [No types assigned]
    Removed Reference Red Hat, Inc. https://patchwork.kernel.org/project/linux-nfs/patch/[email protected]/
  • Initial Analysis by [email protected]

    Feb. 02, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1911309 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1911309 Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://patchwork.kernel.org/project/linux-nfs/patch/[email protected]/ No Types Assigned https://patchwork.kernel.org/project/linux-nfs/patch/[email protected]/ Mailing List, Patch, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:4.2:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-35513 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-2020-35513 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.08 }} 0.01%

score

0.35070

percentile

CVSS31 - Vulnerability Scoring System
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: