What is the severity of CVE-2021-42022?

CVE-2021-42022 is classified as a high-severity vulnerability due to its potential to allow file path traversal attacks.

How do I fix CVE-2021-42022?

To fix CVE-2021-42022, upgrade to SIMATIC eaSie PCS 7 Skill Package version V21.00 SP3 or later.

What types of systems are affected by CVE-2021-42022?

CVE-2021-42022 affects all versions of SIMATIC eaSie PCS 7 Skill Package prior to V21.00 SP3.

What are the consequences of exploiting CVE-2021-42022?

Exploiting CVE-2021-42022 could allow an attacker to access files outside of the intended directory structure.

Is there a workaround for CVE-2021-42022 if I cannot upgrade?

There are no known workarounds for CVE-2021-42022; therefore, upgrading is the recommended remediation.

Vulnerability/
CVE-2021-42022

medium

6.5

CWE

14/12/2021

21/11/2024

CVE-2021-42022: Path Traversal

First published: Tue Dec 14 2021(Updated: )

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.

Credit: productcert@siemens.com productcert@siemens.com

Affected Software	Affected Version	How to fix
Siemens Simatic PCS 7	<=20.07
Siemens Simatic PCS 7	=21.00
Siemens Simatic PCS 7	=21.00-sp1
Siemens Simatic PCS 7	=21.00-sp2

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Reference Links

https://cert-portal.siemens.com/productcert/pdf/ssa-199605.pdf

Frequently Asked Questions

What is the severity of CVE-2021-42022?
CVE-2021-42022 is classified as a high-severity vulnerability due to its potential to allow file path traversal attacks.
How do I fix CVE-2021-42022?
To fix CVE-2021-42022, upgrade to SIMATIC eaSie PCS 7 Skill Package version V21.00 SP3 or later.
What types of systems are affected by CVE-2021-42022?
CVE-2021-42022 affects all versions of SIMATIC eaSie PCS 7 Skill Package prior to V21.00 SP3.
What are the consequences of exploiting CVE-2021-42022?
Exploiting CVE-2021-42022 could allow an attacker to access files outside of the intended directory structure.
Is there a workaround for CVE-2021-42022 if I cannot upgrade?
There are no known workarounds for CVE-2021-42022; therefore, upgrading is the recommended remediation.

agent/type
collector/mitre-cve
source/MITRE
agent/severity
agent/weakness
agent/references
agent/first-publish-date
agent/description
agent/last-modified-date
agent/author
agent/softwarecombine
agent/event
agent/source
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
collector/nvd-api
source/NVD
agent/software-canonical-lookup
vendor/siemens
canonical/siemens simatic pcs 7
version/siemens simatic pcs 7/20.07
version/siemens simatic pcs 7/21.00
version/siemens simatic pcs 7/21.00-sp1
version/siemens simatic pcs 7/21.00-sp2

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