8.8
HIGH
CVE-2021-37937
Fleet-Server Elevated Privileges API Key Creation
Description

An issue was found with how API keys are created with the Fleet-Server service account. When an API key is created with a service account, it is possible that the API key could be created with higher privileges than intended. Using this vulnerability, a compromised Fleet-Server service account could escalate themselves to a super-user.

INFO

Published Date :

Nov. 22, 2023, 2:15 a.m.

Last Modified :

Nov. 30, 2023, 6:38 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2021-37937 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 Elastic elasticsearch
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-2021-37937.

URL Resource
https://discuss.elastic.co/t/elastic-stack-7-14-1-security-update/283077 Vendor Advisory
https://www.elastic.co/community/security Vendor 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-2021-37937 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-37937 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
  • Initial Analysis by [email protected]

    Nov. 30, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://discuss.elastic.co/t/elastic-stack-7-14-1-security-update/283077 No Types Assigned https://discuss.elastic.co/t/elastic-stack-7-14-1-security-update/283077 Vendor Advisory
    Changed Reference Type https://www.elastic.co/community/security No Types Assigned https://www.elastic.co/community/security Vendor Advisory
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration OR *cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:* versions from (including) 7.13.0 up to (including) 7.14.0
  • CVE Received by [email protected]

    Nov. 22, 2023

    Action Type Old Value New Value
    Added Description An issue was found with how API keys are created with the Fleet-Server service account. When an API key is created with a service account, it is possible that the API key could be created with higher privileges than intended. Using this vulnerability, a compromised Fleet-Server service account could escalate themselves to a super-user.
    Added Reference Elastic https://discuss.elastic.co/t/elastic-stack-7-14-1-security-update/283077 [No types assigned]
    Added Reference Elastic https://www.elastic.co/community/security [No types assigned]
    Added CWE Elastic CWE-269
    Added CVSS V3.1 Elastic AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
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-2021-37937 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-2021-37937 weaknesses.

Exploit Prediction

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

0.05 }} 0.01%

score

0.16533

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability