CVE-2021-25673

CVSS V2 Medium 4.9 CVSS V3 Medium 5.5

Description

A vulnerability has been identified in SIMATIC S7-PLCSIM V5.4 (All versions). An attacker with local access to the system could cause a Denial-of-Service condition in the application when it is used to open a specially crafted file. As a consequence, the application could enter an infinite loop, become unresponsive and must be restarted to restore the service.

Overview

CVE ID
CVE-2021-25673

Assigner
productcert@siemens.com

Vulnerability Status
Analyzed

Published Version
2021-03-15T17:15:21

Last Modified Date
2021-03-18T17:38:29

Weakness Enumerations

CWE	URL
CWE-835	http://cwe.mitre.org/data/definitions/835.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:siemens:simatic_s7-plcsim::::::::	1	OR

CVSS Version 2

Version
2.0

Vector String
AV:L/AC:L/Au:N/C:N/I:N/A:C

Access Vector
LOCAL

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
NONE

Availability Impact
COMPLETE

Base Score
4.9

Severity
MEDIUM

Exploitability Score
3.9

Impact Score
6.9

CVSS Version 3

Version
3.1

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

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
5.5

Base Severity
MEDIUM

Exploitability Score
1.8

Impact Score
3.6

References

Reference URL	Reference Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-256092.pdf	Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-25673
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25673

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 07:19:27				Added to TrackCVE
2022-12-05 23:45:46	2021-03-15T17:15Z	2021-03-15T17:15:21	CVE Published Date	updated
2022-12-05 23:45:46		2021-03-18T17:38:29	CVE Modified Date	updated
2022-12-05 23:45:46		Analyzed	Vulnerability Status	updated