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
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
75.5%
CVSS v3 10.0
ATTENTION: Exploitable remotely/low skill level to exploit
Vendor: Schneider Electric
Equipment: U.motion Builder
Vulnerabilities: Command Injection, Cross-site Scripting, and Improper Input Validation
Successful exploitation of these vulnerabilities could allow remote code execution.
The following U.motion Builder Software versions are affected:
An input string may be evaluated as a command by the application. An attacker could exploit this to execute code, read the stack, or cause a segmentation fault in the running application.
CVE-2018-7784 has been assigned to this vulnerability. A CVSS v3 base score of 10.0 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).
A remote command injection allows authentication bypass.
CVE-2018-7785 has been assigned to this vulnerability. A CVSS v3 base score of 10.0 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H).
A cross-site scripting (XSS) vulnerability exists, which could allow injection of malicious scripts.
CVE-2018-7786 has been assigned to this vulnerability. A CVSS v3 base score of 6.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).
This vulnerability is due to improper validation of input of context parameter in HTTP GET request, which could allow the disclosure of sensitive information.
CVE-2018-7787 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
Wei Gao of Keysight and bigric3@360A-TEAM reported these vulnerabilities to NCCIC.
Schneider Electric has released firmware update Version 1.3.4, which includes fixes for these vulnerabilities. It is highly recommended that U.motion Builder users apply the patch in a timely manner.
The firmware is available for download at:
<https://www.schneider-electric.com/en/download/document/Umotion_Server_update/>
Schneider Electricβs security notice SEVD-2018-151-01 is available at the following location:
<https://www.schneider-electric.com/en/download/document/SEVD-2018-151-01/>
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-12-146-01BβTargeted 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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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
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
Low
EPSS
Percentile
75.5%