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AUSCERT External Security Bulletin Redistribution
ESB-2022.3466
Advisory (icsa-22-195-08) Siemens PADS Standard/Plus Viewer
15 July 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: Siemens PADS Standard/Plus Viewer
Publisher: ICS-CERT
Operating System: Network Appliance
Windows
Resolution: Patch/Upgrade
CVE Names: CVE-2022-34291 CVE-2022-34290 CVE-2022-34289
CVE-2022-34288 CVE-2022-34287 CVE-2022-34286
CVE-2022-34285 CVE-2022-34284 CVE-2022-34283
CVE-2022-34282 CVE-2022-34281 CVE-2022-34280
CVE-2022-34279 CVE-2022-34278 CVE-2022-34277
CVE-2022-34276 CVE-2022-34275 CVE-2022-34274
CVE-2022-34273 CVE-2022-34272
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-22-195-08
Comment: CVSS (Max): 7.8 CVE-2022-34289 (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
CVSS Source: ICS-CERT
Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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ICS Advisory (ICSA-22-195-08)
Siemens PADS Standard/Plus Viewer
Original release date: July 14, 2022
Legal Notice
All information products included in https://us-cert.cisa.gov/ics are provided
"as is" for informational purposes only. The Department of Homeland Security
(DHS) does not provide any warranties of any kind regarding any information
contained within. DHS does not endorse any commercial product or service,
referenced in this product or otherwise. Further dissemination of this product
is governed by the Traffic Light Protocol (TLP) marking in the header. For more
information about TLP, see https://us-cert.cisa.gov/tlp/ .
1. EXECUTIVE SUMMARY
o CVSS v3 7.8
o ATTENTION: Low attack complexity
o Vendor: Siemens
o Equipment: PADS Standard/Plus Viewer
o Vulnerabilities: Out-of-bounds Read, Out-of-bounds Write, Improper
Restriction of Operations within the Bounds of a Memory Buffer
2. RISK EVALUATION
Successful exploitations of these vulnerabilities could allow an attacker to
trick a user into opening a malicious file within the affected application,
which could result in code execution.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of PADS Standard and Standard Plus, a PCB schematic
design and layout environment, are affected:
o PADS Standard/Plus Viewer: All versions.
3.2 VULNERABILITY OVERVIEW
3.2.1 OUT-OF-BOUNDS READ CWE-125
The affected application is vulnerable to an out-of-bounds read past the end of
an allocated buffer when parsing PCB files. An attacker could leverage this
vulnerability to execute code in the context of the current process
(FG-VD-22-037, FG-VD-22-059).
CVE-2022-34272 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:H/
I:H/A:H ).
3.2.2 OUT-OF-BOUNDS WRITE CWE-787
The affected application contains an out-of-bounds write past the end of an
allocated structure while parsing specially crafted PCB files. This could allow
an attacker to execute code in the context of the current process
(FG-VD-22-038).
CVE-2022-34273 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:H/
I:H/A:H ).
3.2.3 OUT-OF-BOUNDS WRITE CWE-787
The affected application contains an out-of-bounds write past the end of an
allocated structure while parsing specially crafted PCB files. This could allow
an attacker to execute code in the context of the current process.
(FG-VD-22-039)
CVE-2022-34274 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:H/
I:H/A:H ).
3.2.4 OUT-OF-BOUNDS WRITE CWE-787
The affected application contains an out-of-bounds write past the end of an
allocated structure while parsing specially crafted PCB files. This could allow
an attacker to execute code in the context of the current process
(FG-VD-22-040).
CVE-2022-34275 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:H/
I:H/A:H ).
3.2.5 OUT-OF-BOUNDS WRITE CWE-787
The affected application contains an out-of-bounds write past the end of an
allocated structure while parsing specially crafted PCB files. This could allow
an attacker to execute code in the context of the current process
(FG-VD-22-041).
CVE-2022-34276 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:H/
I:H/A:H ).
3.2.6 OUT-OF-BOUNDS READ CWE-125
The affected application is vulnerable to an out-of-bounds read past the end of
an allocated buffer when parsing PCB files. This could allow an attacker to
execute code in the context of the current process (FG-VD-22-042).
CVE-2022-34277 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:H/
I:H/A:H ).
3.2.7 OUT-OF-BOUNDS READ CWE-125
The affected application is vulnerable to an out-of-bounds read past the end of
an allocated buffer when parsing PCB files. This could allow an attacker to
execute code in the context of the current process (FG-VD-22-043).
CVE-2022-34278 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:H/
I:H/A:H ).
3.2.8 OUT-OF-BOUNDS READ CWE-125
The affected application is vulnerable to an out-of-bounds read past the end of
an allocated buffer when parsing PCB files. An attacker could leverage this
vulnerability to execute code in the context of the current process
(FG-VD-22-044).
CVE-2022-34279 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:H/
I:H/A:H ).
3.2.9 OUT-OF-BOUNDS READ CWE-125
The affected application is vulnerable to an out-of-bounds read past the end of
an allocated buffer when parsing PCB files. An attacker could leverage this
vulnerability to execute code in the context of the current process
(FG-VD-22-045).
CVE-2022-34280 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:H/
I:H/A:H ).
3.2.10 OUT-OF-BOUNDS READ CWE-125
The affected application is vulnerable to an out-of-bounds read past the end of
an allocated buffer when parsing PCB files. An attacker could leverage this
vulnerability to execute code in the context of the current process
(FG-VD-22-046).
CVE-2022-34281 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:H/
I:H/A:H ).
3.2.11 OUT-OF-BOUNDS READ CWE-125
The affected application is vulnerable to an out-of-bounds read past the end of
an allocated buffer when parsing PCB files. An attacker could leverage this
vulnerability to leak information in the context of the current process
(FG-VD-22-047). (FG-VD-22-047)
CVE-2022-34282 has been assigned to this vulnerability. A CVSS v3 base score of
3.3 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:L/
I:N/A:N ).
3.2.12 OUT-OF-BOUNDS READ CWE-125
The affected application is vulnerable to an out-of-bounds read past the end of
an allocated buffer when parsing PCB files. An attacker could leverage this
vulnerability to leak information in the context of the current process
(FG-VD-22-048).
CVE-2022-34283 has been assigned to this vulnerability. A CVSS v3 base score of
3.3 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:L/
I:N/A:N ).
3.2.13 OUT-OF-BOUNDS WRITE CWE-787
The affected application contains an out-of-bounds write past the end of an
allocated structure while parsing specially crafted PCB files. This could allow
an attacker to execute code in the context of the current process
(FG-VD-22-049).
CVE-2022-34284 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:H/
I:H/A:H ).
3.2.14 OUT-OF-BOUNDS READ CWE-125
The affected application is vulnerable to an out-of-bounds read past the end of
an allocated buffer when parsing PCB files. An attacker could leverage this
vulnerability to leak information in the context of the current process
(FG-VD-22-050).
CVE-2022-34285 has been assigned to this vulnerability. A CVSS v3 base score of
3.3 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:L/
I:N/A:N ).
3.2.15 OUT-OF-BOUNDS WRITE CWE-787
The affected application contains an out-of-bounds write past the end of an
allocated structure while parsing specially crafted PCB files. This could allow
an attacker to execute code in the context of the current process
(FG-VD-22-051).
CVE-2022-34286 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:H/
I:H/A:H ).
3.2.16 IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER
CWE-119
The affected application contains a stack corruption vulnerability while
parsing PCB files. An attacker could leverage this vulnerability to leak
information in the context of the current process (FG-VD-22-052, FG-VD-22-056).
CVE-2022-34287 has been assigned to this vulnerability. A CVSS v3 base score of
3.3 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:L/
I:N/A:N ).
3.2.17 OUT-OF-BOUNDS READ CWE-125
The affected application is vulnerable to an out-of-bounds read past the end of
an allocated buffer when parsing PCB files. An attacker could leverage this
vulnerability to leak information in the context of the current process
(FG-VD-22-053).
CVE-2022-34288 has been assigned to this vulnerability. A CVSS v3 base score of
3.3 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:L/
I:N/A:N ).
3.2.18 OUT-OF-BOUNDS WRITE CWE-787
The affected application contains an out-of-bounds write past the end of an
allocated structure while parsing specially crafted PCB files. This could allow
an attacker to execute code in the context of the current process
(FG-VD-22-054).
CVE-2022-34289 has been assigned to this vulnerability. A CVSS v3 base score of
7.8 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:H/
I:H/A:H ).
3.2.19 IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER
CWE-119
The affected application contains a stack corruption vulnerability while
parsing PCB files. An attacker could leverage this vulnerability to leak
information in the context of the current process (FG-VD-22-055).
CVE-2022-34290 has been assigned to this vulnerability. A CVSS v3 base score of
3.3 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:L/
I:N/A:N ).
3.2.20 IMPROPER RESTRICTION OF OPERATIONS WITHIN THE BOUNDS OF A MEMORY BUFFER
CWE-119
The affected application contains a stack corruption vulnerability while
parsing PCB files. An attacker could leverage this vulnerability to leak
information in the context of the current process (FG-VD-22-057, FG-VD-22-058,
FG-VD-22-060).
CVE-2022-34291 has been assigned to this vulnerability. A CVSS v3 base score of
3.3 has been assigned; the CVSS vector string is ( AV:L/AC:L/PR:N/UI:R/S:U/C:L/
I:N/A:N ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
o COUNTRIES/AREAS DEPLOYED: Worldwide
o COMPANY HEADQUARTERS LOCATION: Germany
3.4 RESEARCHER
Siemens reported these vulnerabilities to CISA.
4. MITIGATIONS
Siemens has identified the following specific workarounds and mitigations that
customers can implement to
reduce exploitation risk:
o Do not open untrusted PCB files in PADS Standard/Plus Viewer
As a general security measure, Siemens recommends protecting network access to
devices with appropriate mechanisms. To operate devices in a protected IT
environment, Siemens recommends configuring the environment according to
Siemens' Operational Guidelines for Industrial Security and following
recommendations in the product manuals.
Additional information on industrial security by Siemens can be found on the
Siemens industrial security webpage.
For more information see Siemens Security Advisory SSA-439148.
CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability these vulnerabilities. Specifically, users
should:
o Minimize network exposure for all control system devices and/or systems,
and ensure they are not accessible from the Internet .
o Locate control system networks and remote devices behind firewalls and
isolate them from business networks.
o When remote access is required, use secure methods, such as Virtual Private
Networks (VPNs), recognizing VPNs may have vulnerabilities and should be
updated to the most current version available. Also recognize VPN is only
as secure as its connected devices.
CISA reminds organizations to perform proper impact analysis and risk
assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices
on the ICS webpage at cisa.gov/ics . Several CISA products detailing cyber
defense best practices are available for reading and download, including
Improving Industrial Control Systems Cybersecurity with Defense-in-Depth
Strategies .
Additional mitigation guidance and recommended practices are publicly available
on the ICS webpage at cisa.gov/ics in the technical information paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies .
Organizations observing suspected malicious activity should follow established
internal procedures and report findings to CISA for tracking and correlation
against other incidents.
No known public exploits specifically target these vulnerabilities. These
vulnerabilities are not exploitable remotely.
For any questions related to this report, please contact the CISA at:
Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870
CISA continuously strives to improve its products and services. You can help by
choosing one of the links below to provide feedback about this product.
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