8.1 High
CVSS3
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
5.8 Medium
CVSS2
Access Vector
ADJACENT_NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:A/AC:L/Au:N/C:P/I:P/A:P
0.004 Low
EPSS
Percentile
72.4%
CVSS v3 6.8
ATTENTION: Public exploits are available.
Vendor: Becton, Dickinson and Company (BD)
Equipment: Certain BD Pyxis Products
Vulnerability: Reusing a Nonce
Successful exploitation of this vulnerability could allow data traffic manipulation, resulting in partial disclosure of encrypted communication or injection of data.
The following versions of BD Pyxis products, a medication and supply management system, are affected:
An industry-wide vulnerability exists in the WPA and WPA2 protocol affected by the Key Reinstallation Attacks known as KRACK. The four-way hand shake traffic in the Wi-Fi Protected Access WPA and WPA2 protocol can be manipulated to allow nonce reuse resulting in key reinstallation. This could allow an attacker to execute a “man-in-the-middle” attack, enabling the attacker within radio range to replay, decrypt, or spoof frames.
The following CVEs have been assigned to this group of vulnerabilities:
CVE-2017-13077: Reinstallation of the pairwise key during the four-way handshake.
CVE-2017-13078: Reinstallation of the group key during the four-way handshake.
CVE-2017-13079: Reinstallation of the Integrity Group Temporal Key (IGTK) during the four-way handshake.
CVE-2017-13080: Reinstallation of the group key during the group key handshake.
CVE-2017-13081: Reinstallation of the IGTK during the group key handshake.
CVE-2017-13082: Reinstallation of the Pairwise Transient Key (PTK) Temporal Key (TK) during the fast BSS transmission (FT) handshake.
CVE-2017-13086: Reinstallation of the Tunneled Direct-Link Setup (TDLS) Peer Key (TPK) during the TDLS handshake.
CVE-2017-13087: Reinstallation of the Group Temporal Key (GTK) when processing a Wireless Network Management (WNM) Sleep Mode Response frame.
CVE-2017-13088: Reinstallation of the IGTK when processing a WNM Sleep Mode Response frame.
A CVSS v3 base score of 6.8 has been calculated; the CVSS vector string is (AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).
Mathy Vanhoef of imec-DistriNet, KU Leuven discovered the KRACK vulnerabilities. BD reported to NCCIC that the KRACK vulnerabilities may possibly affect these products.
BD has implemented third-party vendor patches through BD’s routine patch deployment process that resolves these vulnerabilities for most devices. Some devices require coordination with BD. BD is in the process of contacting users to schedule and deploy patches. There is currently no reported verified instance of the KRACK vulnerability being exploited maliciously against BD devices.
Additionally, BD recommends the following compensating controls in order to reduce risk associated with this vulnerability:
BD has published a product security bulletin to notify users about this issue and to provide additional mitigation counsel. It can be found at the following location on their web page:
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 in the ICS-CERT Technical Information Paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies, that is available for download from the ICS-CERT website.
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.
These vulnerabilities have been publicly disclosed. These vulnerabilities are exploitable from an adjacent network. High skill level is needed to exploit.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13077
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13078
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13079
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13080
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13081
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13082
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13086
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13087
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-13088
www.bd.com/en-us/support/product-security-and-privacy/product-security-bulletin-for-wpa2-krack-wi-fi-vulnerability
cwe.mitre.org/data/definitions/323.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=BD%20Pyxis+https://www.cisa.gov/news-events/ics-medical-advisories/icsma-18-114-01
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www.facebook.com/CISA
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www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
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mailto:?subject=BD%20Pyxis&body=www.cisa.gov/news-events/ics-medical-advisories/icsma-18-114-01
8.1 High
CVSS3
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
5.8 Medium
CVSS2
Access Vector
ADJACENT_NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:A/AC:L/Au:N/C:P/I:P/A:P
0.004 Low
EPSS
Percentile
72.4%