CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
38.3%
CVSS v3 7.5
**ATTENTION:**Exploitable remotely/low skill level to exploit
**Vendor:**Rockwell Automation
Equipment: PowerFlex 525 AC Drives
**Vulnerability:**Resource Exhaustion
Successful exploitation of this vulnerability could result in resource exhaustion, denial of service, and/or memory corruption.
The following versions of PowerFlex 525, an AC drive, are affected:
3.2.1 UNCONTROLLED RESOURCE CONSUMPTION (‘RESOURCE EXHAUSTION’) CWE-400
A remote, unauthenticated threat actor can repeatedly send specific CIP packets to an affected PowerFlex 525 drive, which may allow disruption of the availability of the device.
CVE-2018-19282 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).
Nicolas Merle of Applied Risk reported this vulnerability to Rockwell Automation.
Rockwell Automation has released new firmware to address the vulnerability. Download the latest version of the firmware from:
https://compatibility.rockwellautomation.com/Pages/MultiProductDownload.aspx?Keyword=25B&crumb=112
Rockwell Automation recommends the following general security guidelines:
Rockwell Automation has released a security advisory regarding this vulnerability, which can be found on its website at the following location (login required):
<https://rockwellautomation.custhelp.com/app/answers/detail/a_id/1082684>
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 on the ICS-CERT website in the Technical Information Paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
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 this vulnerability.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-19282
cisasurvey.gov1.qualtrics.com/jfe/form/SV_9n4TtB8uttUPaM6?product=https://www.cisa.gov/news-events/ics-advisories/icsa-19-087-01
compatibility.rockwellautomation.com/Pages/MultiProductDownload.aspx?Keyword=25B&crumb=112
cwe.mitre.org/data/definitions/400.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
rockwellautomation.custhelp.com/app/answers/detail/a_id/1082684
rockwellautomation.custhelp.com/app/answers/detail/a_id/898270/page/1
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CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
38.3%