6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.1 High
AI Score
Confidence
High
0.009 Low
EPSS
Percentile
82.3%
This updated advisory is a follow-up to the original advisory titled ICSA-21-007-03 Eaton EASYsoft that was published January 7, 2021, to the ICS webpage on us-cert.cisa.gov.
Successful exploitation of these vulnerabilities could allow a local attacker to modify or crash the program.
The affected product allows a pointer to be read into an object from a file, resulting in type confusion.
CVE-2020-6656 has been assigned to this vulnerability. A CVSS v3 base score of 5.8 has been assigned; the CVSS vector string is (AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:L).
The affected product is vulnerable to an out-of-bounds read, which may allow an attacker to modify or crash the program.
CVE-2020-6655 has been assigned to this vulnerability. A CVSS v3 base score of 5.8 has been assigned; the CVSS vector string is (AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:L).
Francis Provencher {PRL}, working with Trend Microโs Zero Day Initiative, reported these vulnerabilities to CISA.
--------- Begin Update A Part 1 of 1 ---------
Eaton has patched the issues and released Version 7.22, which can be downloaded from Eatonโs website.
Navigate to Eaton software download center -> Select โSoftwareโ -> โeasySoftโ -> v7.22
--------- End Update A Part 1 of 1 ---------
Eaton recommends those affected by the report vulnerabilities use only .E70 files created from a fully trusted source.
If the application crashes due to .E70 file upload, restart the application and do not upload the .E70 file again.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
CISA also provides a section for control systems security recommended practices on the ICS webpage on us-cert.cisa.gov. 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 webpage on us-cert.cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01BโTargeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.
High skill is needed to exploit. These vulnerabilities are not exploitable remotely. No known public exploits specifically target these vulnerabilities.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-6655
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2020-6656
cwe.mitre.org/data/definitions/125.html
cwe.mitre.org/data/definitions/843.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=Eaton%20EASYsoft%20%28Update%20A%29+https://www.cisa.gov/news-events/ics-advisories/icsa-21-007-03
us-cert.cisa.gov/ics
us-cert.cisa.gov/ics
us-cert.cisa.gov/ics/alerts/ICS-ALERT-10-301-01
us-cert.cisa.gov/ics/recommended-practices
us-cert.cisa.gov/ics/tips/ICS-TIP-12-146-01B
us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.eaton.com/EN/nederland/Productenoplossingen/Electrical/Klantondersteuning/DownloadCenterSoftware/index.htm
www.eaton.com/us/en-us/catalog/machinery-controls/easysoft.html
www.facebook.com/CISA
www.facebook.com/sharer/sharer.php?u=https://www.cisa.gov/news-events/ics-advisories/icsa-21-007-03&title=Eaton%20EASYsoft%20%28Update%20A%29
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:L
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:L
www.instagram.com/cisagov
www.linkedin.com/company/cybersecurity-and-infrastructure-security-agency
www.linkedin.com/sharing/share-offsite/?url=https://www.cisa.gov/news-events/ics-advisories/icsa-21-007-03
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-21-007-03
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Eaton%20EASYsoft%20%28Update%20A%29&body=www.cisa.gov/news-events/ics-advisories/icsa-21-007-03
6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.1 High
AI Score
Confidence
High
0.009 Low
EPSS
Percentile
82.3%