CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
54.0%
**ATTENTION:**Remotely exploitable/low skill level to exploit.
Vendor: Schneider Electric
Equipment: PowerSCADA Anywhere and Citect Anywhere
Vulnerabilities: Information Exposure, Cross-Site Request Forgery, Improper Neutralization of Expression, Improper Validation of Certificate Expiration
Schneider Electric reports that the vulnerabilities affect the following versions of PowerSCADA Anywhere and Citect Anywhere mobile extensions:
Successful exploitation of these vulnerabilities could allow an attacker to perform actions on behalf of a legitimate user, perform network reconnaissance, or gain access to resources beyond those intended with normal operation of the product.
Schneider Electric strongly recommends that users upgrade their systems as soon as possible. The following provides links to instructions for addressing software that is at potential risk for the vulnerabilities:
<https://schneider-electric.box.com/shared/static/3tvcc115kax8volhd8i13e4wg5k1sdel.iso>
In addition to installing the provided security patch, Schneider Electric recommends that the following steps be taken to further harden the system:
For more information about the vulnerabilities and patch in PowerSCADA Anywhere, please refer to Schneider Electric Security Notification – PowerSCADA Anywhere SEVD-2017-173-01, which is available at the following location:
<http://www.schneider-electric.com/en/download/document/SEVD-2017-173-01/>
For more information about the vulnerabilities and patch in Citect Anywhere, please refer to Schneider Electric Security Notification – Citect Anywhere, which is available at the following location:
NCCIC/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. 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.
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.
In addition, ICS-CERT recommends that users take the following measures to protect themselves from social engineering attacks:
No known public exploits specifically target these vulnerabilities.
The secure gateway component of the affected products is vulnerable to CSRF for multiple state-changing requests. This type of attack requires some level of social engineering in order to get a legitimate user to click on or access a malicious link/site containing the CSRF attack.
CVE-2017-7969 has been assigned to this vulnerability. A CVSS v3 base score of 8.1 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N).
An attacker on an adjacent network may be able to specify arbitrary server target nodes in connection requests to the secure gateway and server components.
CVE-2017-7970 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
The affected products use outdated cipher suites and improperly verify peer SSL certificates.
CVE-2017-7971 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:H/PR:L/UI:N/S:U/C:H/I:N/A:N).
An attacker on an adjacent network may be able to escape out of remote applications and launch other processes.
CVE-2017-7972 has been assigned to this vulnerability. A CVSS v3 base score of 5.5 has been calculated; the CVSS vector string is (AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).
Schneider Electric notified ICS-CERT of these vulnerabilities after they made the fixes available.
Critical Infrastructure Sectors: Commercial Facilities
Countries/Areas Deployed: Worldwide
Company Headquarters Location: Paris, France
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-7969
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-7970
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-7971
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-7972
www.schneider-electric.com/en/download/document/SEVD-2017-173-01/
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schneider-electric.box.com/shared/static/3tvcc115kax8volhd8i13e4wg5k1sdel.iso
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CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
54.0%