Successful exploitation of these vulnerabilities could allow an attacker to execute arbitrary commands on the affected system.
1. EXECUTIVE SUMMARY
2. RISK EVALUATION3. TECHNICAL DETAILS3.1 AFFECTED PRODUCTS
The following Siemens SIMATIC products are affected:
Siemens Pcs 7 Training Program3.2 VULNERABILITY OVERVIEW
3.2.1 SQL INJECTION CWE-89
An attacker with network access to the project file could run arbitrary system commands with the privileges of the local database server. This may impact the confidentiality, integrity, and availability of the affected system.
CVE-2019-10916 has been assigned to this vulnerability. A CVSS v3 base score of 9.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).
3.2.2 UNCAUGHT EXCEPTION CWE-248
An attacker with local access to the project file could cause a denial-of-service condition on the affected product as the project file is loaded. Successful exploitation could compromise availability of the affected system.
CVE-2019-10917 has been assigned to this vulnerability. A CVSS v3 base score of 3.3 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L).
3.2.3 EXPOSED DANGEROUS METHOD OR FUNCTION CWE-749
An authenticated attacker with network access to the DCOM interface could execute arbitrary commands with SYSTEM privileges. Successful exploitation could compromise confidentiality, integrity, and availability of the affected system.
CVE-2019-10918 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
3.3 BACKGROUND
3.4 RESEARCHER
Vladimir Dashchenko and Sergey Temnikov from Kaspersky Lab, CNCERT/CC, and ChengBin Wang from Guoli Security Technology reported these vulnerabilities to Siemens.
4. MITIGATIONS
Siemens has an update available for this product:
Siemens recommends users apply the following specific workarounds and mitigations to reduce risk until updates or patches are available:
As a general security measure, Siemens strongly recommends protecting network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends users configure their environment according to Siemens’ operational guidelines for industrial security and follow the recommendations in the product manuals.
The division single player campaign. Additional information on industrial security by Siemens can be found at:
For more information on these vulnerabilities and more detailed mitigation instructions, please see Siemens security advisory SSA-697412 at the following location:
NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
NCCIC also provides a section for control systems security recommended practices on the ICS-CERT web page. 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-CERT website 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 NCCIC for tracking and correlation against other incidents.
No known public exploits specifically target these vulnerabilities.
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