6 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:P/I:P/A:P
8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
8.1 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
42.9%
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This updated advisory is a follow-up to the original advisory titled ICSA-21-348-02 Schneider Electric Rack PDU that was published December 14, 2021, to the ICS webpage on www.cisa.gov/uscert.
Successful exploitation of this vulnerability could allow an attacker to access the system with elevated privileges.
The following products of the Rack Power Distribution Unit (PDU) are affected:
--------- Begin Update A Part 3 of 3 ---------
An attacker could access the system with elevated privileges when a privileged account clicks on a malicious URL that compromises the security token.
CVE-2021-22825 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:L).
--------- End Update A Part 3 of 3 ---------
Andrea Palanca of Nozomi Networks reported this vulnerability to CISA.
Schneider Electric recommends the following:
If users choose not to apply the remediations provided above, immediately apply the following mitigations to reduce the risk of exploit:
Schneider Electric strongly recommends the following industry cybersecurity best practices:
For more information, please see Schneider Electricβs security notification: SEVD-2021-348-04
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 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 cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01BβTargeted 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.
No known public exploits specifically target this vulnerability. This vulnerability has a high attack complexity.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-22825
cwe.mitre.org/data/definitions/200
download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-348-04
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=Schneider%20Electric%20Rack%20PDU%20%28Update%20A%29+https://www.cisa.gov/news-events/ics-advisories/icsa-21-348-02
www.apc.com/us/en/faqs/FAQ000225298/
www.apc.com/us/en/faqs/FAQ000225298/
www.cisa.gov/uscert/ics
www.cisa.gov/uscert/ics
www.cisa.gov/uscert/ics/recommended-practices
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
www.cisa.gov/uscert/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.facebook.com/CISA
www.facebook.com/sharer/sharer.php?u=https://www.cisa.gov/news-events/ics-advisories/icsa-21-348-02&title=Schneider%20Electric%20Rack%20PDU%20%28Update%20A%29
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:H/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-21-348-02
www.oig.dhs.gov/
www.se.com/ww/en/download/document/APC_RPDU2G_706_EN/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-21-348-02
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Schneider%20Electric%20Rack%20PDU%20%28Update%20A%29&body=www.cisa.gov/news-events/ics-advisories/icsa-21-348-02
6 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:P/I:P/A:P
8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
8.1 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
42.9%