8.8
HIGH
CVE-2021-40905
CheckMK Enterprise Edition Remote Code Execution Vulnerability
Description

The web management console of CheckMK Enterprise Edition (versions 1.5.0 to 2.0.0p9) does not properly sanitise the uploading of ".mkp" files, which are Extension Packages, making remote code execution possible. Successful exploitation requires access to the web management interface, either with valid credentials or with a hijacked session of a user with administrator role. NOTE: the vendor states that this is the intended behavior: admins are supposed to be able to execute code in this manner

INFO

Published Date :

March 25, 2022, 11:15 p.m.

Last Modified :

Aug. 4, 2024, 3:15 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2021-40905 has a 5 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-2021-40905 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 Tribe29 checkmk
1 Checkmk checkmk
: 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-2021-40905.

URL Resource
http://checkmk.com Product
https://github.com/Edgarloyola/CVE-2021-40905 Exploit 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).

Profile Photo
NaInSec/CVE-PoC-in-GitHub

All CVE - PoC in GitHub

poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate

Updated: 2 months, 3 weeks ago
5 stars 2 fork 2 watcher
Born at : March 22, 2024, 3:58 p.m. This repo has been linked 928 different CVEs too.
Profile Photo
zecool/cve

None

Updated: 8 months, 1 week ago
1 stars 0 fork 0 watcher
Born at : March 11, 2024, 1:21 p.m. This repo has been linked 930 different CVEs too.
Profile Photo
WhooAmii/POC_to_review

None

Updated: 9 months ago
2 stars 2 fork 2 watcher
Born at : Nov. 25, 2022, 5:43 p.m. This repo has been linked 930 different CVEs too.
Profile Photo
soosmile/POC

None

Updated: 4 months, 3 weeks ago
8 stars 1 fork 1 watcher
Born at : June 21, 2022, 7:45 a.m. This repo has been linked 943 different CVEs too.
Profile Photo
Edgarloyola/CVE-2021-40905

None

Updated: 2 years, 10 months ago
0 stars 0 fork 0 watcher
Born at : Oct. 12, 2021, 9:36 a.m. This repo has been linked 1 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-2021-40905 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-40905 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]

    Aug. 04, 2024

    Action Type Old Value New Value
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Aug. 01, 2024

    Action Type Old Value New Value
    Added CWE CISA-ADP CWE-434
    Added CVSS V3.1 CISA-ADP AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:b3:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:b3:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:b6:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:b6:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p10:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p10:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p11:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p11:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p12:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p12:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p13:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p13:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p2:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p2:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p3:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p3:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p4:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p4:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p5:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p5:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:-:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:-:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:b1:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:b1:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:b2:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:b2:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:b7:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:b7:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:b8:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:b8:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:i1:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:i1:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p1:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p1:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p14:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p14:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p15:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p15:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p16:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p16:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p17:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p17:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p6:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p6:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p7:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p7:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p9:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p9:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:p8:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:p8:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:b4:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:b4:*:*:*:*:*:*
  • CPE Deprecation Remap by [email protected]

    Jul. 23, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:2.0.0:b5:*:*:*:*:*:* OR *cpe:2.3:a:checkmk:checkmk:2.0.0:b5:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jul. 18, 2024

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

    May. 17, 2024

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

    May. 14, 2024

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

    Apr. 11, 2024

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

    Mar. 21, 2024

    Action Type Old Value New Value
    Added Tag MITRE disputed
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Changed Description ** DISPUTED ** The web management console of CheckMK Enterprise Edition (versions 1.5.0 to 2.0.0p9) does not properly sanitise the uploading of ".mkp" files, which are Extension Packages, making remote code execution possible. Successful exploitation requires access to the web management interface, either with valid credentials or with a hijacked session of a user with administrator role. NOTE: the vendor states that this is the intended behavior: admins are supposed to be able to execute code in this manner. The web management console of CheckMK Enterprise Edition (versions 1.5.0 to 2.0.0p9) does not properly sanitise the uploading of ".mkp" files, which are Extension Packages, making remote code execution possible. Successful exploitation requires access to the web management interface, either with valid credentials or with a hijacked session of a user with administrator role. NOTE: the vendor states that this is the intended behavior: admins are supposed to be able to execute code in this manner
  • Modified Analysis by [email protected]

    Dec. 09, 2022

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

    Aug. 30, 2022

    Action Type Old Value New Value
    Changed Description The web management console of CheckMK Enterprise Edition (versions 1.5.0 to 2.0.0p9) does not properly sanitise the uploading of ".mkp" files, which are Extension Packages, making remote code execution possible. Successful exploitation requires access to the web management interface, either with valid credentials or with a hijacked session of a user with administrator role. ** DISPUTED ** The web management console of CheckMK Enterprise Edition (versions 1.5.0 to 2.0.0p9) does not properly sanitise the uploading of ".mkp" files, which are Extension Packages, making remote code execution possible. Successful exploitation requires access to the web management interface, either with valid credentials or with a hijacked session of a user with administrator role. NOTE: the vendor states that this is the intended behavior: admins are supposed to be able to execute code in this manner.
  • Initial Analysis by [email protected]

    Apr. 04, 2022

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type http://checkmk.com No Types Assigned http://checkmk.com Product
    Changed Reference Type https://github.com/Edgarloyola/CVE-2021-40905 No Types Assigned https://github.com/Edgarloyola/CVE-2021-40905 Exploit, Third Party Advisory
    Added CWE NIST CWE-434
    Added CPE Configuration OR *cpe:2.3:a:tribe29:checkmk:*:*:*:*:*:*:*:* versions from (including) 1.5.0 up to (excluding) 2.0.0 *cpe:2.3:a:tribe29:checkmk:2.0.0:-:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:b1:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:b2:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:b3:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:b4:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:b5:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:b6:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:b7:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:b8:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:i1:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p1:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p10:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p11:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p12:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p13:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p14:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p15:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p16:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p17:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p2:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p3:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p4:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p5:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p6:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p7:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p8:*:*:*:*:*:* *cpe:2.3:a:tribe29:checkmk:2.0.0:p9:*:*:*:*:*:*
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-2021-40905 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-2021-40905 weaknesses.

Exploit Prediction

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

0.76 }} 0.20%

score

0.81488

percentile

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