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NVD Vulnerability Details :

CVE-2020-22552

Analyzed

Source-cve@mitre.org

Published At-28 Oct, 2020 | 14:15

Updated At-14 Feb, 2024 | 01:17

The Snap7 server component in version 1.4.1, when an attacker sends a crafted packet with COTP protocol the last-data-unit flag set to No and S7 writes a var function, the Snap7 server will be crashed.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Primary	3.1	7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary	2.0	5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P

Type: Primary

Version: 3.1

Base score: 7.5

Base severity: HIGH

Vector:

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Type: Primary

Version: 2.0

Base score: 5.0

Base severity: MEDIUM

Vector:

AV:N/AC:L/Au:N/C:N/I:N/A:P

CPE Matches

snap7_project>>snap7>>1.4.1

cpe:2.3:a:snap7_project:snap7:1.4.1:*:*:*:*:*:*:*

Weaknesses

CWE ID	Type	Source
NVD-CWE-noinfo	Primary	nvd@nist.gov

CWE ID: NVD-CWE-noinfo

Type: Primary

Source: nvd@nist.gov

References

Hyperlink	Source	Resource
http://snap7.com	cve@mitre.org	Third Party Advisory URL Repurposed
https://sourceforge.net/p/snap7/discussion/bugfix/thread/456d76fdde/	cve@mitre.org	Third Party Advisory
https://sourceforge.net/projects/snap7/	cve@mitre.org	Exploit Third Party Advisory

Hyperlink: http://snap7.com

Source: cve@mitre.org

Resource:

Third Party Advisory

URL Repurposed

Hyperlink: https://sourceforge.net/p/snap7/discussion/bugfix/thread/456d76fdde/

Source: cve@mitre.org

Resource:

Third Party Advisory

Hyperlink: https://sourceforge.net/projects/snap7/

Source: cve@mitre.org

Resource:

Exploit

Third Party Advisory

CISA Catalog

Metrics

CPE Matches

Weaknesses

Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References

Change History