CVE-2021-42022

Severity Score

6.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability has been identified in SIMATIC eaSie PCS 7 Skill Package (All versions < V21.00 SP3). When downloading files, the affected systems do not properly neutralize special elements within the pathname. An attacker could then cause the pathname to resolve to a location outside of the restricted directory on the server and read unexpected critical files. The affected file download function is disabled by default.

Se ha identificado una vulnerabilidad en SIMATIC eaSie PCS 7 Skill Package (Todas las versiones anteriores a V21.00 SP3). Al descargar archivos, los sistemas afectados no neutralizan correctamente los elementos especiales dentro del nombre de la ruta. Un atacante podría entonces hacer que el nombre de ruta sea resuelto en una ubicación fuera del directorio restringido en el servidor y leer archivos críticos inesperados. La función de descarga de archivos afectada está deshabilitada por defecto

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-10-06 CVE Reserved
2021-12-14 CVE Published
2024-06-11 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://cert-portal.siemens.com/productcert/pdf/ssa-199605.pdf	2021-12-17

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Siemens Search vendor "Siemens"		Simatic Easie Pcs 7 Skill Search vendor "Siemens" for product "Simatic Easie Pcs 7 Skill"				<= 20.07 Search vendor "Siemens" for product "Simatic Easie Pcs 7 Skill" and version " <= 20.07"		-		Affected
Siemens Search vendor "Siemens"		Simatic Easie Pcs 7 Skill Search vendor "Siemens" for product "Simatic Easie Pcs 7 Skill"				21.00 Search vendor "Siemens" for product "Simatic Easie Pcs 7 Skill" and version "21.00"		-		Affected
Siemens Search vendor "Siemens"		Simatic Easie Pcs 7 Skill Search vendor "Siemens" for product "Simatic Easie Pcs 7 Skill"				21.00 Search vendor "Siemens" for product "Simatic Easie Pcs 7 Skill" and version "21.00"		sp1		Affected
Siemens Search vendor "Siemens"		Simatic Easie Pcs 7 Skill Search vendor "Siemens" for product "Simatic Easie Pcs 7 Skill"				21.00 Search vendor "Siemens" for product "Simatic Easie Pcs 7 Skill" and version "21.00"		sp2		Affected