ESB-2018.0748 - [Win] OSIsoft PI products: Multiple vulnerabilities 2018-03-14

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0748
                 Security updates for OSIsoft PI products
                               14 March 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           OSIsoft PI Data Archive
                   OSIsoft PI Vision
                   OSIsoft PI Web API
Publisher:         ICS-CERT
Operating System:  Windows
Impact/Access:     Administrator Compromise -- Existing Account            
                   Access Privileged Data   -- Remote/Unauthenticated      
                   Denial of Service        -- Remote/Unauthenticated      
                   Cross-site Scripting     -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-7533 CVE-2018-7531 CVE-2018-7529
                   CVE-2018-7508 CVE-2018-7504 CVE-2018-7500
                   CVE-2018-7496  

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-18-072-02
   https://ics-cert.us-cert.gov/advisories/ICSA-18-072-03
   https://ics-cert.us-cert.gov/advisories/ICSA-18-072-04

Comment: This bulletin contains three (3) OSIsoft security advisories.

- --------------------------BEGIN INCLUDED TEXT--------------------

Advisory (ICSA-18-072-02)

OSIsoft PI Data Archive

Original release date: March 13, 2018

Legal Notice

All information products included in http://ics-cert.us-cert.gov are
provided "as is" for informational purposes only. The Department of Homeland
Security (DHS) does not provide any warranties of any kind regarding any
information contained within. DHS does not endorse any commercial product or
service, referenced in this product or otherwise. Further dissemination of this
product is governed by the Traffic Light Protocol (TLP) marking in the header.
For more information about TLP, see http://www.us-cert.gov/tlp/.

CVSS v3 7.5

ATTENTION: Exploitable remotely/low skill level to exploit.

Vendor: OSIsoft

Equipment: PI Data Archive

Vulnerabilities: Deserialization of Untrusted Data, Improper Input Validation,
Incorrect Default Permissions

AFFECTED PRODUCTS

The following versions of PI Data Archive, a data storage solution, are
affected:

  * PI Data Archive versions 2017 and prior.

IMPACT

Successful exploitation of these vulnerabilities could cause loss of network
access to the device or allow escalated privileges that may result in gaining
full control of the PI Data Archive server.

MITIGATION

OSIsoft recommends that customers upgrade to PI Data Archive 2017 R2.  Obtain
the update from OSIsoft.

OSIsoft has released the following advisory:

https://techsupport.osisoft.com/Troubleshooting/Alerts/AL00339

NCCIC recommends users take defensive measures to minimize the risk of
exploitation of these vulnerabilities. Specifically, users should:

  * Minimize network exposure for all control system devices and/or systems,
    and ensure that they are not accessible from the Internet.
  * Locate control system networks and remote devices behind firewalls, and
    isolate them from the business network.
  * When remote access is required, use secure methods, such as Virtual Private
    Networks (VPNs), recognizing that VPNs may have vulnerabilities and should
    be updated to the most current version available. Also recognize that VPN
    is only as secure as the connected devices.

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
in the NCCIC Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber
Intrusion Detection and Mitigation Strategies, that is available for download
from the ICS-CERT website.

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. 

VULNERABILITY OVERVIEW

DESERIALIZATION OF UNTRUSTED DATA CWE-502

Unauthenticated users may modify deserialized data to send custom requests that
crash the server.

CVE-2018-7529 has been assigned to this vulnerability. A CVSS v3 base score of
7.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N
/I:N/A:H).

INCORRECT DEFAULT PERMISSIONS CWE-276

Insecure default configuration may allow escalation of privileges that gives
the actor full control over the system.

CVE-2018-7533 has been assigned to this vulnerability. A CVSS v3 base score of
7.3 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:R/S:U/C:H
/I:H/A:H).

IMPROPER INPUT VALIDATION CWE-20

Unauthenticated users may use unvalidated custom requests to crash the server.

CVE-2018-7531 has been assigned to this vulnerability. A CVSS v3 base score of
5.9 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:N
/I:N/A:H).

RESEARCHER

OSIsoft self reported these vulnerabilities to NCCIC.

BACKGROUND

Critical Infrastructure Sectors: Multiple Sectors

Countries/Areas Deployed: Worldwide

Company Headquarters Location: USA

- --------------------------------------------------------------------------------

Advisory (ICSA-18-072-03)

OSIsoft PI Vision

Original release date: March 13, 2018

Legal Notice

All information products included in http://ics-cert.us-cert.gov are
provided "as is" for informational purposes only. The Department of Homeland
Security (DHS) does not provide any warranties of any kind regarding any
information contained within. DHS does not endorse any commercial product or
service, referenced in this product or otherwise. Further dissemination of this
product is governed by the Traffic Light Protocol (TLP) marking in the header.
For more information about TLP, see http://www.us-cert.gov/tlp/.

CVSS v3 6.1

ATTENTION: Exploitable remotely/low skill level to exploit

Vendor: OSIsoft

Equipment: PI Vision

Vulnerabilities: Protection Mechanism Failure, Information Exposure

AFFECTED PRODUCTS

The following versions of PI Vision, a data visualization framework, are
affected:

  * PI Vision versions 2017 and prior.

IMPACT

Successful exploitation of these vulnerabilities could allow remote code
execution and expose information.

MITIGATION

OSIsoft recommends that users upgrade to PI Vision 2017 R2 Update 1. Obtain the
update from OSIsoft.

OSIsoft has released the following alert:

https://techsupport.osisoft.com/Troubleshooting/Alerts/AL00338

NOTE: PI Vision 2017 R2 Update 1 also addresses PI Web API vulnerabilities.
Please see the following OSIsoft alerts:

https://techsupport.osisoft.com/Troubleshooting/Alerts/AL00337

https://techsupport.osisoft.com/Troubleshooting/Alerts/AL00336

NCCIC recommends users take defensive measures to minimize the risk of
exploitation of these vulnerabilities. Specifically, users should:

  * Minimize network exposure for all control system devices and/or systems,
    and ensure that they are not accessible from the Internet.
  * Locate control system networks and remote devices behind firewalls, and
    isolate them from the business network.
  * When remote access is required, use secure methods, such as Virtual Private
    Networks (VPNs), recognizing that VPNs may have vulnerabilities and should
    be updated to the most current version available. Also recognize that VPN
    is only as secure as the connected devices.

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
in the NCCIC Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber
Intrusion Detection and Mitigation Strategies, that is available for download
from the ICS-CERT website.

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.

VULNERABILITY OVERVIEW

PROTECTION MECHANISM FAILURE CWE-693

X-XSS-Protection response header is not set to block, allowing attempts at
reflected cross-site scripting.

CVE-2018-7504 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).

INFORMATION EXPOSURE CWE-200

Server response header and referrer-policy response header each provide
unintended information disclosure.

CVE-2018-7496 has been assigned to this vulnerability. A CVSS v3 base score of
4.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:L
/I:N/A:N).

RESEARCHER

OSIsoft self-reported the vulnerabilities to NCCIC.

BACKGROUND

Critical Infrastructure Sectors: Multiple Sectors

Countries/Areas Deployed: Worldwide

Company Headquarters Location: United States

- --------------------------------------------------------------------------------
Advisory (ICSA-18-072-04)

OSIsoft PI Web API

Original release date: March 13, 2018

Legal Notice

All information products included in http://ics-cert.us-cert.gov are
provided "as is" for informational purposes only. The Department of Homeland
Security (DHS) does not provide any warranties of any kind regarding any
information contained within. DHS does not endorse any commercial product or
service, referenced in this product or otherwise. Further dissemination of this
product is governed by the Traffic Light Protocol (TLP) marking in the header.
For more information about TLP, see http://www.us-cert.gov/tlp/.

CVSS v3 9.3

ATTENTION: Exploitable remotely/low skill level to exploit.

Vendor: OSIsoft

Equipment: PI Web API

Vulnerabilities: Permissions, Privileges, and Access Controls; Cross-site
Scripting

AFFECTED PRODUCTS

OSIsoft reports that the vulnerabilities affect the following PI Web API
products:

PI Web API versions 2017 R2 and prior

NOTE: Not all configurations of PI Web API listed above are affected. Please
see the OSIsoft alerts referenced in the Mitigation section.

IMPACT

Successful exploitation of these vulnerabilities could allow escalated
privileges and may allow remote code execution.

MITIGATION

OSIsoft recommends that users upgrade to PI Vision 2017 R2 Update 1 or PI AF
Services 2017 R2 Update 1, which both address the PI Web API vulnerabilities.
OBtain the updates from OSIsoft.

OSIsoft has released the following alerts:

https://techsupport.osisoft.com/Troubleshooting/Alerts/AL00337

https://techsupport.osisoft.com/Troubleshooting/Alerts/AL00336

NCCIC recommends users take defensive measures to minimize the risk of
exploitation of these vulnerabilities. Specifically, users should:

  * Minimize network exposure for all control system devices and/or systems,
    and ensure that they are not accessible from the Internet.
  * Locate control system networks and remote devices behind firewalls, and
    isolate them from the business network.
  * When remote access is required, use secure methods, such as Virtual Private
    Networks (VPNs), recognizing that VPNs may have vulnerabilities and should
    be updated to the most current version available. Also recognize that VPN
    is only as secure as the connected devices.

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
in the NCCIC Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber
Intrusion Detection and Mitigation Strategies, that is available for download
from the ICS-CERT website.

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.

VULNERABILITY OVERVIEW

PERMISSIONS, PRIVILEGES, AND ACCESS CONTROLS CWE-264

Privileges may be escalated, giving attackers access to the PI System via the
service account.

CVE-2018-7500 has been assigned to this vulnerability. A CVSS v3 base score of
9.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H
/I:L/A:N).

IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE
SCRIPTING') CWE-79

Cross-site scripting may occur when input is incorrectly neutralized.

CVE-2018-7508 has been assigned to this vulnerability. A CVSS v3 base score of
4.7 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:R/S:C/C:L
/I:L/A:N).

RESEARCHER

OSIsoft self-reported the vulnerabilities to NCCIC.

BACKGROUND

Critical Infrastructure Sectors: Multiple Sectors

Countries/Areas Deployed: Worldwide

Company Headquarters Location: United States

- --------------------------END INCLUDED TEXT--------------------

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