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
- CVSS v3 7.8
- ATTENTION: Low attack complexity
- Vendor: Siemens
- Equipment: Solid Edge
- Vulnerabilities: Out-of-bounds Write
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could lead to an application crash or arbitrary code execution on the target host system.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of Siemens Solid Edge, a portfolio of software tools, are affected:
- Solid Edge SE2020 – All versions before 2020MP14
- Solid Edge SE2021 – All versions before SE2021MP5
3.2 VULNERABILITY OVERVIEW
The ugeom2d.dll library lacks proper validation of user-supplied data when parsing DFT files. This could result in an out-of-bounds write past the end of an allocated structure. An attacker could leverage this vulnerability to execute code in the context of the current process.
The jutil.dll library lacks proper validation of user-supplied data when parsing DFT files. This could result in an out-of-bounds write past the end of an allocation structure. An attacker could leverage this vulnerability to execute code in the context of the current process.
- CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing
- COUNTRIES/AREAS DEPLOYED: Worldwide
- COMPANY HEADQUARTERS LOCATION: Germany
Garmin, working with Trend Micro’s Zero Day Initiative, reported these vulnerabilities to Siemens.
Siemens has released updates and recommends users apply them when possible:
- Solid Edge SE2020 – All versions before 2020MP14: Update to 2020MP14 or later (login required)
- Solid Edge SE2021 – All versions before SE2021MP5: Update to SE2021MP5 or later (login required)
Siemens has identified the following specific workarounds and mitigations users can apply to reduce the risk:
- Avoid opening untrusted filed from unknown sources in Solid Edge.
As a general security measure, Siemens strongly recommends users protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends users configure the environment according to Siemens operational guidelines for industrial security, and follow the recommendations in the product manual.
Additional information on industrial security by Siemens can be found at: https://www.siemens.com/industrialsecurity
For more information about this issue, please see Siemens security advisory SSA-208356
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities.
CISA also recommends users take the following measures to protect themselves from social engineering attacks:
- Do not click web links or open unsolicited attachments in email messages.
- Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
- Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.
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 on us-cert.cisa.gov. Several recommended 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 on us-cert.cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their 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:
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.
Please share your thoughts.
We recently updated our anonymous product survey; we'd welcome your feedback.