CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
EPSS
Percentile
64.4%
OSIsoft has identified and reported to NCCIC/ICS-CERT a default permissions vulnerability in PI AF product. OSIsoft has produced a mitigation plan to remove this vulnerability. This vulnerability could be exploited remotely.
OSIsoft reports that the vulnerability affects the following products:
Under certain conditions, SQL statements can be executed that result in data tampering, information disclosure, repudiation, elevation of privilege, and denial of service.
Impact to individual organizations depends on many factors that are unique to each organization. ICS-CERT recommends that organizations evaluate the impact of this vulnerability based on their operational environment, architecture, and product implementation.
OSIsoft is a US-based company that maintains its headquarters in San Leandro, California, with operations globally.
The affected product, PI AF, allows definition of organizational assets and/or equipment. PI AF uses Microsoft SQL Server database. According to OSIsoft, PI AF is deployed in several critical infrastructure sectors. OSIsoft estimates that these products are used worldwide.
Some product installations insert the “Everyone” account in the “PI SQL (AF) Trusted Users” group on the PI AF Server. Users in the “PI SQL (AF) Trusted Users” group can bypass most of the security checks that would normally be applied to various types of SQL statements, and can execute commands on the PI AF SQL Database without authorization.
CVE-2015-1013NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-1013, NIST uses this advisory to create the CVE web site report. This web site will be active sometime after publication of this advisory. has been assigned to this vulnerability. OSIsoft has calculated a CVSS v2 base score of 6.5; the CVSS vector string is (AV:N/AC:L/Au:S/C:P/I:P/A:P).CVSS Calculator, http://nvd.nist.gov/cvss.cfm?version=2&vector=AV:N/AC:L/Au:S/C:P/I:P/A:P, web site last accessed May 12, 2015.
This vulnerability could be exploited remotely.
No known public exploits specifically target this vulnerability.
An attacker with a low skill would be able to exploit this vulnerability.
OSIsoft recommends the following mitigation actions, depending on the version of PI WebParts installed, to remove this vulnerability:
If a system with PI WebParts is installed, the recommended action depends on the version:
For more information regarding this vulnerability and the recommended mitigation plan, please see OSIsoft’s security bulletin titled “AL00280 - Security Bulletin Vulnerability in PI SQL (AF) Trusted Users group could allow bypassing of security” at the following location:
<https://techsupport.osisoft.com/Troubleshooting/Alerts/AL00280>
Users may also visit the OSIsoft technical support web site: https://techsupport.osisoft.com/
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 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.
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