6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
0.0004 Low
EPSS
Percentile
0.4%
Independent researcher Mark Cross (@xerubus) has identified an uncontrolled search path element vulnerability in Vyaire Medical’s CareFusion Upgrade Utility application. Vyaire Medical has produced an update that mitigates this vulnerability.
The following versions of CareFusion Upgrade Utility, designed to upgrade compatible units to the latest software versions, are affected:
Successful exploitation of this vulnerability may allow an attacker to insert a malicious DLL on the target system and run arbitrary code.
Impact to individual organizations depends on many factors that are unique to each organization. NCCIC recommends that organizations evaluate the impact of this vulnerability based on their operational environment and specific clinical usage.
Vyaire Medical is a U.S.-based company.
The affected product, CareFusion Upgrade Utility, is designed to upgrade compatible units to the latest software versions. According to Vyaire Medical, CareFusion Upgrade Utility is deployed across the Healthcare and Public Health sector. Vyaire Medical estimates these products are used primarily in the United States and Europe, with a small percentage in Asia.
A successful exploit of this vulnerability requires the local user to install a crafted DLL on the target machine. The application loads the DLL and gives the attacker access at the same privilege level as the application.
CVE-2018-5457 has been assigned to this vulnerability. A CVSS v3 base score of 6.7 has been assigned; the CVSS vector string is (AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H).
This vulnerability is not remotely exploitable.
No known public exploits specifically target this vulnerability.
High skill level is needed to exploit.
Vyaire Medical is no longer supporting the CareFusion Upgrade Utility v2.0.2.2 and recommends that users upgrade to the newer Vyaire Upgrade Utility v2.0.3.0. This updated Upgrade Utility will not install on Windows XP and will require updating the underlying system to Windows 7 or later.
Vyaire Medical has released a Product Security Bulletin, available at the following URL:
<https://www.vyaire.com/productsecurity>
The Vyaire Upgrade Utility v2.0.3.0 update is available at the following URL:
NCCIC recommends that users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should:
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. NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
Additional mitigation guidance and recommended practices are publicly available in the NCCIC 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.
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.
In addition, NCCIC recommends that users take the following measures to protect themselves from social engineering attacks:
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-5457
cwe.mitre.org/data/definitions/427.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=Vyaire%20Medical%20CareFusion%20Upgrade%20Utility%20Vulnerability+https://www.cisa.gov/news-events/ics-medical-advisories/icsma-18-037-01
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-18-037-01&title=Vyaire%20Medical%20CareFusion%20Upgrade%20Utility%20Vulnerability
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
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-18-037-01
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-medical-advisories/icsma-18-037-01
www.usa.gov/
www.vyaire.com/productsecurity
www.vyaire.com/us/our-products/respiratory-care/pulmonary-function-testing/spirometers/spirometry-software-and-firmware-downloads
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Vyaire%20Medical%20CareFusion%20Upgrade%20Utility%20Vulnerability&body=www.cisa.gov/news-events/ics-medical-advisories/icsma-18-037-01
6.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
0.0004 Low
EPSS
Percentile
0.4%