CVE-2021-3918
Prototype Pollution in kriszyp/json-schema
Description
json-schema is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
INFO
Published Date :
Nov. 13, 2021, 9:15 a.m.
Last Modified :
Jan. 17, 2025, 8:15 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2021-3918
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.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.0 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Update the affected packages.
- Upgrade the node-json-schema packages.
Public PoC/Exploit Available at Github
CVE-2021-3918 has a 4 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2021-3918.
| URL | Resource |
|---|---|
| https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741 | Patch Third Party Advisory |
| https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9 | Exploit Issue Tracking Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/12/msg00013.html | Mailing List Third Party Advisory |
| https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741 | Patch Third Party Advisory |
| https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9 | Exploit Issue Tracking Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/12/msg00013.html | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20250117-0004/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-3918 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-2021-3918
weaknesses.
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).
None
Python
None
Dockerfile Go JavaScript
A centralized repository of standalone security patches for open source libraries.
appsec backport cve devsecops fix hotfix open-source patch protection remediation seal security update upgrade vulnerability
Tool for validating Grafana community plugins
plugins-platform keep
Go Dockerfile JavaScript
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-3918 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3918 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
Jan. 17, 2025
Action Type Old Value New Value Added Reference https://security.netapp.com/advisory/ntap-20250117-0004/ -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741 Added Reference https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9 Added Reference https://lists.debian.org/debian-lts-announce/2022/12/msg00013.html -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Feb. 03, 2023
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2022/12/msg00013.html No Types Assigned https://lists.debian.org/debian-lts-announce/2022/12/msg00013.html Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Dec. 06, 2022
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2022/12/msg00013.html [No Types Assigned] -
Modified Analysis by [email protected]
Jul. 29, 2022
Action Type Old Value New Value Removed CWE NIST CWE-915 Added CWE NIST CWE-1321 -
CVE Modified by [email protected]
May. 12, 2022
Action Type Old Value New Value Added CWE huntr.dev CWE-1321 -
Initial Analysis by [email protected]
Nov. 16, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741 No Types Assigned https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741 Patch, Third Party Advisory Changed Reference Type https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9 No Types Assigned https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9 Exploit, Issue Tracking, Patch, Third Party Advisory Added CWE NIST CWE-915 Added CPE Configuration OR *cpe:2.3:a:json-schema_project:json-schema:*:*:*:*:*:*:*:* versions up to (excluding) 0.4.0
Vulnerability Scoring Details
Base CVSS Score: 9.8
Base CVSS Score: 9.8
Base CVSS Score: 7.5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.21 }} 0.25%
score
0.78223
percentile