CVE-2021-20702 : Buffer overflow vulnerability in the Transaction Server CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 f

Buffer overflow vulnerability in the Transaction Server 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.

Published 2021-11-03 00:15:08

Updated 2022-04-29 18:38:10

Source JPCERT/CC

View at NVD, CVE.org

Vulnerability category: OverflowExecute code

Exploit prediction scoring system (EPSS) score for CVE-2021-20702

EPSS FAQ

0.63%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 79 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-20702

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2021-20702

CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.

Assigned by: nvd@nist.gov (Primary)

Products affected by CVE-2021-20702

NEC » Expresscluster X » For Windows
Versions from including (>=) 1.0 and up to, including, (<=) 4.3
cpe:2.3:a:nec:expresscluster_x:*:*:*:*:*:windows:*:*
Matching versions
NEC » Clusterpro X » For Windows
Versions from including (>=) 1.0 and up to, including, (<=) 4.3
cpe:2.3:a:nec:clusterpro_x:*:*:*:*:*:windows:*:*
Matching versions
NEC » Clusterpro X Singleserversafe » For Windows
Versions from including (>=) 1.0 and up to, including, (<=) 4.3
cpe:2.3:a:nec:clusterpro_x_singleserversafe:*:*:*:*:*:windows:*:*
Matching versions
NEC » Expresscluster X Singleserversafe » For Windows
Versions from including (>=) 1.0 and up to, including, (<=) 4.3
cpe:2.3:a:nec:expresscluster_x_singleserversafe:*:*:*:*:*:windows:*:*
Matching versions

Vulnerability Details : CVE-2021-20702

Exploit prediction scoring system (EPSS) score for CVE-2021-20702

CVSS scores for CVE-2021-20702

CWE ids for CVE-2021-20702

References for CVE-2021-20702

Products affected by CVE-2021-20702