CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
43.8%
**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
The following versions of PI Data Archive, a data storage solution, are affected:
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.
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:
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.
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).
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).
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).
OSIsoft self reported these vulnerabilities to NCCIC.
Critical Infrastructure Sectors: Multiple Sectors
Countries/Areas Deployed: Worldwide
Company Headquarters Location: USA
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-7529
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-7531
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-7533
cisasurvey.gov1.qualtrics.com/jfe/form/SV_9n4TtB8uttUPaM6?product=https://www.cisa.gov/news-events/ics-advisories/icsa-18-072-02
cwe.mitre.org/data/definitions/20.html
cwe.mitre.org/data/definitions/276.html
cwe.mitre.org/data/definitions/502.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
techsupport.osisoft.com/Troubleshooting/Alerts/AL00339
twitter.com/CISAgov
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www.dhs.gov
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www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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mailto:?subject=OSIsoft%20PI%20Data%20Archive&body=www.cisa.gov/news-events/ics-advisories/icsa-18-072-02
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
43.8%