CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS
Percentile
49.6%
**ATTENTION:**Remotely exploitable.
Vendor: OSIsoft
Equipment: PI Server 2017
Vulnerabilities: Improper Authentication
OSIsoft reports that the vulnerabilities affect the following PI Server products:
Successful exploitation of these vulnerabilities could allow the attacker to spoof a PI Server or cause undefined behavior within the PI Network Manager.
OSIsoft recommends that users upgrade to PI Data Archive 2017. There is more detail in the โSecurity Information and Guidanceโ section of the release notes on the OSIsoft web page (user account required):
<https://techsupport.osisoft.com/Downloads/File/bd5c24f2-4937-45e6-aaa5-939d6208f5fc>
OSIsoft recommends users run the PI Data Archive on a secured internal control or corporate network. For a starting point on PI System security best practices, see Knowledge Base Article KB00833 - Seven best practices for securing your PI Server on the OSIsoft web page:
<https://techsupport.osisoft.com/Troubleshooting/KB/KB00833>
Please see Security Bulletin AL00315 on the OSIsoft web page for more information about this issue:
<https://techsupport.osisoft.com/Troubleshooting/Alerts/AL00315>
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 ICSโCERT Technical Information Paper, ICS-TIP-12-146-01BโTargeted 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.
No known public exploits specifically target these vulnerabilities. High skill level is needed to exploit.
PI Data Archive has protocol flaws with the potential to expose change records in the clear and allow a malicious party to spoof a server within a collective.
CVE-2017-7930 has been assigned to this vulnerability. OSIsoft calculated a CVSS v3 base score of 8.9; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L).
PI Network Manager using older protocol versions contains a flaw that could allow a malicious user to authenticate with a server and then cause PI Network Manager to behave in an undefined manner.
CVE-2017-7934 has been assigned to this vulnerability. OSIsoft calculated a CVSS v3 base score of 5.9; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).
OSIsoft self-disclosed these vulnerabilities.
**Critical Infrastructure Sectors:**Multiple Sectors
Countries/Areas Deployed: Worldwide
Company Headquarters Location: United States
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-7930
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-7934
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techsupport.osisoft.com/Downloads/File/bd5c24f2-4937-45e6-aaa5-939d6208f5fc
techsupport.osisoft.com/Troubleshooting/Alerts/AL00315
techsupport.osisoft.com/Troubleshooting/KB/KB00833
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CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS
Percentile
49.6%