Operating System:

[Win]

Published:

20 August 2015

Protect yourself against future threats.

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2015.2181
              OSIsoft PI Data Archive Server Vulnerabilities
                              20 August 2015

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

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

Product:           OSIsoft PI Data Archive Server
Publisher:         US-CERT
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated      
                   Increased Privileges            -- Existing Account            
                   Denial of Service               -- Remote/Unauthenticated      
                   Access Confidential Data        -- Remote/Unauthenticated      
                   Unauthorised Access             -- Remote with User Interaction
Resolution:        Patch/Upgrade

Original Bulletin: 
   https://ics-cert.us-cert.gov/advisories/ICSA-15-225-01

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Advisory (ICSA-15-225-01)

OSIsoft PI Data Archive Server Vulnerabilities

Original release date: August 13, 2015

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/.

OVERVIEW

OSIsoft has identified 56 vulnerabilities in its own PI System software. 
OSIsoft has produced a new version of Data Archive (Version 3.4.395.64) to 
mitigate these issues.

Some of these vulnerabilities could be exploited remotely.

AFFECTED PRODUCTS

OSIsoft reports that the vulnerabilities affect the following versions:

All versions of the PI Data Archive prior to Version 3.4.395.64.

IMPACT

An attacker who exploits these vulnerabilities could create a 
denial-of-service condition or allow remote code execution on the Windows OS 
running this software.

VULNERABILITY CHARACTERIZATION

The issues were rated by OSIsoft using the Common Vulnerability Scoring System
(CVSS)a as follows:

21 high (CVSS: 6.8-10),

27 medium (CVSS: 3.4-6.7), and

8 low (CVSS: 0-3.3).

The high-level security issues that are addressed in PI Data Archive 2015 
include:

CWE-20b: Improper Input Validation (6 issues),

CWE-250c: Execution with Unnecessary Privileges (3 issues),

CWE-200d: Information Exposure (1 issue),

CWE-476e: NULL Pointer Dereference / Denial of Service (13 issues), and

CWE-384f: Session Management (2 issues).

These security-related issues were discovered in PI Data Archive 2012 as part
of OSIsofts SDL process.

VULNERABILITY DETAILS

EXPLOITABILITY

Some of these vulnerabilities could be exploited remotely.

EXISTENCE OF EXPLOIT

No known public exploits specifically target these vulnerabilities.

MITIGATION

OSIsoft recommends that users upgrade to Data Archive 3.4.395.64 released June
25, 2015.

Users may download the latest software version from the following web site:

https://techsupport.osisoft.com/Downloads/All-Downloads/PI-Server/PI-Dat...

Users may download release notes for the latest software version from the 
following web site:

https://techsupport.osisoft.com/Downloads/All-Downloads/PI-Server/PI-Dat...

For more information regarding this vulnerability and the recommended 
mitigation plan, please see OSIsofts security bulletin titled Advisory: PI 
Server 2015 Multiple Security Updates at the following location:

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

Users may also visit the OSIsoft technical support web site: 
https://techsupport.osisoft.com/

BACKGROUND

OSIsoft is a US-based company that maintains its headquarters in San Leandro,
California, with operations globally.

According to OSIsoft, Data Archive is the core server technology used in the 
PI System for real time data storage and distribution of instrument data. The
PI System uses this core server technology to manage and enhance stored 
instrument data for retrieval, analysis, and visualization. According to 
OSIsoft, PI Asset Framework is deployed in several critical infrastructure 
sectors. OSIsoft estimates that these products are used worldwide.

HELPFUL DOCUMENTATION

Severity Matrix is as follows:

Low CVSS 0-3.3	  Medium CVSS 3.4-6.7 	High CVSS 6.8-10

NCCIC/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.

a. CVSS Calculator, https://nvd.nist.gov/cvss.cfm?adv&calculator&version=2, 
web site last accessed August 13, 2015.

b. CWE-20: Improper Input Validation, 
http://cwe.mitre.org/data/definitions/20.html, web site last accessed August 
13, 2015.

c. CWE-250: Execution with Unnecessary Privileges, 
https://cwe.mitre.org/data/definitions/250.html, web site last accessed August
13, 2015.

d. CWE-200: Information Exposure, 
https://cwe.mitre.org/data/definitions/200.html, web site last accessed August
13, 2015.

e. CWE-400: Uncontrolled Resource Consumption ('Resource Exhaustion'), 
https://cwe.mitre.org/data/definitions/400.html, web site last accessed August
13, 2015.

f. CWE-384: Session Fixation, https://cwe.mitre.org/data/definitions/384.html,
web site last accessed August 13, 2015.

Contact Information

For any questions related to this report, please contact ICS-CERT at:

Email: ics-cert@hq.dhs.gov

Toll Free: 1-877-776-7585

International Callers: (208) 526-0900

For industrial control systems security information and incident reporting: 
http://ics-cert.us-cert.gov

ICS-CERT continuously strives to improve its products and services. You can 
help by choosing one of the links below to provide feedback about this 
product.

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