CVE-2022-4856 : A vulnerability has been found in Modbus Tools Modbus Slave up to 7.5.1 and clas

A vulnerability has been found in Modbus Tools Modbus Slave up to 7.5.1 and classified as critical. Affected by this vulnerability is an unknown functionality of the file mbslave.exe of the component mbs File Handler. The manipulation leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The identifier VDB-217021 was assigned to this vulnerability.

Published 2022-12-30 10:15:10

Updated 2024-05-17 02:16:59

Source VulDB

View at NVD, CVE.org

Vulnerability category: Overflow

Products affected by CVE-2022-4856

Modbustools » Modbus Slave
Versions up to, including, (<=) 7.5.1
cpe:2.3:a:modbustools:modbus_slave:*:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2022-4856

EPSS FAQ

0.07%

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

~ 17 %

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

CVSS scores for CVE-2022-4856

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
6.3	MEDIUM	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L	2.8	3.4	VulDB
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: Low Integrity: Low Availability: Low
6.3	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L	2.8	3.4	VulDB	2024-02-29
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: Low Integrity: Low Availability: Low
7.8	HIGH	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	1.8	5.9	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2022-4856

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: cna@vuldb.com (Primary)

References for CVE-2022-4856

https://github.com/Durian1546/vul/blob/main/webray.com.cn/Modbus%20Slave/poc/poc.mbs

vul/poc.mbs at main · Durian1546/vul · GitHub
Third Party Advisory
https://vuldb.com/?id.217021

CVE-2022-4856 | Modbus Tools Modbus Slave mbs File mbslave.exe buffer overflow
Third Party Advisory
https://vuldb.com/?ctiid.217021

CVE-2022-4856 | Modbus Tools Modbus Slave mbs File mbslave.exe buffer overflow
Third Party Advisory
https://github.com/Durian1546/vul/blob/main/webray.com.cn/Modbus%20Slave/Modbus%20Slave%20(version%207.5.1%20and%20earlier)%20mbs%20file%20has%20a%20buffer%20overflow%20vulnerability.md

vul/Modbus Slave (version 7.5.1 and earlier) mbs file has a buffer overflow vulnerability.md at main · Durian1546/vul · GitHub
Exploit;Patch;Third Party Advisory

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Vulnerability Details : CVE-2022-4856

Products affected by CVE-2022-4856

Exploit prediction scoring system (EPSS) score for CVE-2022-4856

CVSS scores for CVE-2022-4856

CWE ids for CVE-2022-4856

References for CVE-2022-4856