7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:C/I:N/A:N
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
0.003 Low
EPSS
Percentile
69.6%
Independent researcher Maxim Rupp has identified an authorization bypass vulnerability in CAREL’s PlantVisor application. CAREL has confirmed that this vulnerability refers to the phased-out CAREL product PlantVisorEnhanced and is no longer supported.
This vulnerability could be exploited remotely.
CAREL reports that the vulnerability affects the following versions:
An attacker or unauthorized user can refer to the particular file and thus bypass authorization.
Impact to individual organizations depends on many factors that are unique to each organization. NCCIC/ICS-CERT recommends that organizations evaluate the impact of this vulnerability based on their operational environment, architecture, and product implementation.
CAREL is an Italy-based company that maintains offices in four countries around the world.
The affected product, PlantVisorEnhanced, is a web-based SCADA system. According to CAREL, PlantVisorEnhanced is deployed across several sectors including Commercial Facilities, Critical Manufacturing, and Energy. CAREL estimates that these products are used worldwide.
As this vulnerability affects Internet Protocol-connected devices, an unauthorized user can refer to the particular file and thus bypass authorization.
CVE-2016-0867NVD, http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-0867, web site last accessed January 21. 2016. has been assigned to this vulnerability. A CVSS v3 base score of 7.5 the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).CVSS Calculator, https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N, web site last accessed January 21. 2016.
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.
PlantVisorEnhanced was replaced by PlantVisorPRO (new model) in 2007. Users should contact [email protected] in order to receive the necessary files and details on how to perform the installation to avoid further security issues.
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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mailto:?subject=CAREL%20PlantVisor%20Enhanced%20Authentication%20Bypass%20Vulnerability&body=www.cisa.gov/news-events/ics-advisories/icsa-16-021-01
7.8 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:N/C:C/I:N/A:N
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
0.003 Low
EPSS
Percentile
69.6%