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1. EXECUTIVE SUMMARY
- CVSS v3 7.8
- ATTENTION: Low attack complexity
- Vendor: Siemens
- Equipment: JT2GO, Teamcenter Visualization
- Vulnerabilities: Infinite Loop, Null Pointer Dereference, Integer Overflow to Buffer Overflow, Double Free, Access of Uninitialized Pointer
2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker to trick a user to open a malicious file (crafted as CGM, TIFF or TG4) with any of the affected products, which could lead the application to crash or to arbitrary code execution.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following Siemens products are affected:
- JT2GO: All versions prior to v18.104.22.168
- Teamcenter Visualization v13.3: All versions prior to v22.214.171.124
- Teamcenter Visualization v14.0: All versions prior to v126.96.36.199
3.2 VULNERABILITY OVERVIEW
The Tiff_Loader.dll is vulnerable to infinite loop condition while parsing specially crafted TIFF files. An attacker could leverage this vulnerability to crash the application and cause a denial-of-service condition.
The CGM_NIST_Loader.dll contains a null pointer dereference vulnerability while parsing specially crafted CGM files. An attacker could leverage this vulnerability to crash the application and cause a denial-of-service condition.
The Mono_Loader.dll library is vulnerable to integer overflow condition while parsing specially crafted TG4 files. An attacker could leverage this vulnerability to crash the application and cause a denial-of-service condition.
The affected product is vulnerable to a stack-based buffer overflow, which may allow an attacker to remotely execute arbitrary code.
3.2.5 DOUBLE FREE CWE-415
The CGM_NIST_Loader.dll library contains a double free vulnerability while parsing specially crafted CGM files. An attacker could leverage this vulnerability to execute code in the context of the current process.
The CGM_NIST_Loader.dll library is vulnerable to uninitialized pointer free while parsing specially crafted CGM files. An attacker could leverage this vulnerability to execute code in the context of the current process.
- CRITICAL INFRASTRUCTURE SECTORS: Multiple Sectors
- COUNTRIES/AREAS DEPLOYED: Worldwide
- COMPANY HEADQUARTERS LOCATION: Germany
Jin Huang, of ADLab of Venustech, reported these vulnerabilities to CISA.
Siemens recommends updating its software to the latest version:
- JT2GO: Update to v188.8.131.52
- Teamcenter Visualization v13.3: Update to v184.108.40.206
- Teamcenter Visualization v14.0: Update to v220.127.116.11
Siemens has identified the following workarounds and mitigations users can apply to reduce the risk:
- Avoid opening untrusted files from unknown sources in affected products.
As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the 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.
For additional information, please refer to Siemens Security Advisory SSA-553086
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
CISA also provides a section for control systems security recommended practices on the ICS webpage on 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 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.
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.
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
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