7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
7.3 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
0.206 Low
EPSS
Percentile
96.4%
Andrea Micalizzi discovered an unsafe ActiveX control vulnerability in Schneider Electric’s SoMachine software. He reported this vulnerability to ZDI who then reported it to NCCIC/ICS‑CERT. Schneider Electric has produced a patch to mitigate this vulnerability.
This vulnerability could be exploited remotely.
Schneider Electric reports that the vulnerability affects the following products:
An exploitation of this vulnerability may allow an attacker to remotely execute arbitrary code.
Impact to individual organizations depends on many factors that are unique to each organization. ICS-CERT recommends that organizations evaluate the impact of this vulnerability based on their operational environment, architecture, and product implementation.
Schneider Electric’s corporate headquarters is located in Paris, France, and it maintains offices in more than 100 countries worldwide.
The affected product, SoMachine, is software for developing, configuring, and commissioning a machine in a single software environment, including logic, motion control, HMI, and related network automation functions. According to Schneider Electric, SoMachine is deployed in the Commercial Facilities sector. Schneider Electric estimates that this product is used worldwide.
An ActiveX control is intended for restricted use, but it has been marked as safe-for-scripting.
CVE-2016-4529NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-4529, NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. has been assigned to this vulnerability. A CVSS v3 base score of 7.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L).CVSS Calculator, https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L , web site last accessed July 14, 2016.
This vulnerability could be exploited remotely.
No known public exploits specifically target this vulnerability.
An attacker with a low skill would be able to exploit this vulnerability.
Schneider Electric has released a patch that resolves the vulnerability. Schneider Electric’s patch is available at the following location:
Schneider Electric’s security notice SEVD-2016-161-01 is available at the following location:
<http://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2016-161-01>
ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should:
ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
ICS-CERT also provides a section for control systems security recommended practices on the ICS-CERT web page at: http://ics-cert.us-cert.gov/content/recommended-practices. 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 in the ICS‑CERT Technical Information Paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies, that is available for download from the ICS-CERT web site (http://ics-cert.us-cert.gov/).
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to ICS-CERT for tracking and correlation against other incidents.
download.schneider-electric.com/files?p_Doc_Ref=SEVD-2016-161-01
www.schneider-electric.com/ww/en/download/document/SoMachine%20HVAC%20-%20Programming%20Software%20for%20Modicon%20M171-M172%20Logic%20Controllers
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7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
7.3 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
0.206 Low
EPSS
Percentile
96.4%