9.8
CRITICAL
CVE-2021-20704
CLUSTERPRO EXPRESSCLUSTER Buffer Overflow Remote Code Execution Vulnerability
Description

Buffer overflow vulnerability in the compatible API with previous versions CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows and earlier, EXPRESSCLUSTER X 4.3 SingleServerSafe for Windows and earlier allows attacker to remote code execution via a network.

INFO

Published Date :

Nov. 3, 2021, 12:15 a.m.

Last Modified :

Nov. 21, 2024, 5:47 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-20704 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 Nec clusterpro_x
2 Nec clusterpro_x_singleserversafe
3 Nec expresscluster_x
4 Nec expresscluster_x_singleserversafe
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-2021-20704.

URL Resource
https://jpn.nec.com/security-info/secinfo/nv21-015_en.html
https://jpn.nec.com/security-info/secinfo/nv21-015_en.html

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-2021-20704 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-20704 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://jpn.nec.com/security-info/secinfo/nv21-015_en.html
  • CVE Modified by [email protected]

    May. 14, 2024

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

    Nov. 07, 2023

    Action Type Old Value New Value
    Changed Source JPCERT/CC NEC Corporation
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference NEC Corporation https://jpn.nec.com/security-info/secinfo/nv21-015_en.html [No types assigned]
    Removed Reference JPCERT/CC https://jpn.nec.com/security-info/secinfo/nv21-015_en.html
  • Modified Analysis by [email protected]

    Apr. 29, 2022

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:nec:clusterpro_x:*:*:*:*:*:windows:*:* versions from (including) 1.0 up to (including) 4.3 *cpe:2.3:a:nec:expresscluster_x:*:*:*:*:*:windows:*:* versions from (including) 1.0 up to (including) 4.3 OR *cpe:2.3:a:nec:clusterpro_x:*:*:*:*:*:windows:*:* versions from (including) 1.0 up to (including) 4.3 *cpe:2.3:a:nec:clusterpro_x_singleserversafe:*:*:*:*:*:windows:*:* versions from (including) 1.0 up to (including) 4.3 *cpe:2.3:a:nec:expresscluster_x:*:*:*:*:*:windows:*:* versions from (including) 1.0 up to (including) 4.3 *cpe:2.3:a:nec:expresscluster_x_singleserversafe:*:*:*:*:*:windows:*:* versions from (including) 1.0 up to (including) 4.3
  • CVE Modified by [email protected]

    Dec. 17, 2021

    Action Type Old Value New Value
    Changed Description Buffer overflow vulnerability in the compatible API with previous versions CLUSTERPRO X 1.0 for Windows and later, EXPRESSCLUSTER X 1.0 for Windows and later allows attacker to remote code execution via a network. Buffer overflow vulnerability in the compatible API with previous versions CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows and earlier, EXPRESSCLUSTER X 4.3 SingleServerSafe for Windows and earlier allows attacker to remote code execution via a network.
  • Initial Analysis by [email protected]

    Nov. 08, 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://jpn.nec.com/security-info/secinfo/nv21-015_en.html No Types Assigned https://jpn.nec.com/security-info/secinfo/nv21-015_en.html Vendor Advisory
    Added CWE NIST CWE-120
    Added CPE Configuration OR *cpe:2.3:a:nec:clusterpro_x:*:*:*:*:*:windows:*:* versions from (including) 1.0 up to (including) 4.3 *cpe:2.3:a:nec:expresscluster_x:*:*:*:*:*:windows:*:* versions from (including) 1.0 up to (including) 4.3
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-2021-20704 is associated with the following CWEs:

Exploit Prediction

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

0.66 }} 0.03%

score

0.79852

percentile

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