7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8 High
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.974 High
EPSS
Percentile
99.9%
This updated advisory is a follow-up to the original advisory titled ICSA-20-170-06 BD Alaris PCU that was published June 18, 2020, on the ICS webpage on us-cert.gov.
Successful exploitation of this vulnerability could allow an attacker to cause a denial of service (DoS) on the target system and could cause the BD Alaris PCU to disconnect from the facility’s wireless network.
Wireless functionality operates independently from the pump system and a disruption in wireless connectivity would not affect pump module functionality. Exploiting this vulnerability would not provide administrative access to the BD Alaris PC Unit or the BD Alaris Systems Manager. An unauthorized user would not be able to gain permissions or be able to perform remote commands for the BD Alaris PC Unit.
The following versions of the BD Alaris PCU that has implemented the Linux Kernel v4.4.97 within the Laird Wireless Module WB40N are affected:
The affected products incorporate a vulnerable Linux kernel which is vulnerable to uncontrolled resource consumption due to a hard-coded Linux kernel maximum segment size overflow. This could allow an attacker to cause a denial of service, affecting the wireless functionality of the vulnerable devices.
CVE-2019-11479 has been assigned to this vulnerability. A CVSS v3 base score of 5.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).
BD notified CISA that these products are affected by this Linux kernel vulnerability.
BD recommends the following to help reduce the risks associated with this third-party vulnerability:
--------- Begin Update A Part 1 of 1 ---------
For more information on this issue, please see the associated BD product security bulletin on the BD website.
--------- End Update A Part 1 of 1 ---------
For more information on BD’s product security and vulnerability management, contact the BD product security office.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Where additional information is needed, users should refer to existing cybersecurity in medical device guidance issued by the FDA.
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.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.gov 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 CISA for tracking and correlation against other incidents.
No known public exploits specifically target this vulnerability.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2019-11479
www.bd.com/productsecurity
cwe.mitre.org/data/definitions/400.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=BD%20Alaris%20PCU%20%28Update%20A%29+https://www.cisa.gov/news-events/ics-medical-advisories/icsma-20-170-06
www.bd.com/en-us/support/product-security-and-privacy/product-security-bulletins/third-party-product-security-bulletin-for-linux-kernel-vulnerability-within-wi-fi-module-in-alaris-pcu
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-medical-advisories/icsma-20-170-06&title=BD%20Alaris%20PCU%20%28Update%20A%29
www.fda.gov/medical-devices/digital-health/cybersecurity
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: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-medical-advisories/icsma-20-170-06
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-medical-advisories/icsma-20-170-06
www.us-cert.gov/ics
www.us-cert.gov/ics
www.us-cert.gov/ics/recommended-practices
www.us-cert.gov/ics/tips/ICS-TIP-12-146-01B
www.us-cert.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=BD%20Alaris%20PCU%20%28Update%20A%29&body=www.cisa.gov/news-events/ics-medical-advisories/icsma-20-170-06
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8 High
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.974 High
EPSS
Percentile
99.9%